Error codes for KamAZ Euro-4 are information about problems in the operation of the vehicle.

How to diagnose

Diagnostics includes collecting signs of problems in the system, scanning electronic system controls, resetting and checking all mechanisms and systems for faults in the electronic unit, inspecting all sensors that are responsible for uninterrupted operation power unit.

During diagnostics of KamAZ-5490, 54115, 5308 and other models with an engine manufactured according to international environmental standard Euro-3 and 4, measure the pressure level in the fuel system, test performance generator set and analyze traffic fumes using special equipment. They also check the winding of the electromagnetic regulator of the fuel supply system and the short circuit in the inductive sensor coils.

Equipment and programs for diagnostics

There are several scanners for detecting problems in vehicle mechanisms, for example:

1. Autoscanner DK-5. This equipment helps detect operational problems electronic unit by reading and adjusting control system indicators using a computer. This autoscanner can be used at temperatures up to +30°C and relative humidity no more than 80%.
2. Scanner EDS-24. This is a software and hardware complex designed for computer diagnostics cargo vehicle. It includes a USB adapter with galvanic isolation, which makes it possible to test systems in low voltage conditions.

Diagnostic programs:

• Euroscan;
• Scanmatik-2;
• AVTOAS-CARGO.

Decoding errors

The decoding of KamAZ error codes is presented in the instructions for the program, which is used for diagnostics. Examples of errors:

• 213 - malfunction of the power unit control device;
• 296 - oil pressure has dropped;
• 2973 - failures in the air pressure control system in the intake manifold;
• 214 - overheating of the oil fluid;
• 235 - insufficient amount of coolant in the system;
• 425 — heat oils;
• 3617 - there is no signal from the multi-stage switch;
• error 4335 - problems with air supply;
• 275 - fuel injection pump is not working correctly;
• 429 — high performance voltage in the fuel indicator circuit;
• 351 - malfunction of the injectors;
• 415 - no high level working fluid;
• 261 - fuel overheating.

Sensor failures

Fault codes for KamAZ-34334, 6308 and other models with Euro-4 engines:

• 221 - a breakdown in the pedal position sensor, which is responsible for the supply of working fluid;
• 232 - malfunction of the sensor measuring atmospheric pressure;
• 335 - defects in the wiring of the lamp control output stage;
• 231 - malfunction of the boost pressure sensor on electrical unit management;
• 124 — fixing an incorrect voltage indicator;
• 345 — incorrect work transmitting a signal from the exhaust gas pressure indicator;
• 113 - problems with camshaft speed;
• 112 - incorrect indicators supplied to the control unit from the crankshaft;
• 246 - malfunction of the temperature sensor;
• 00550 - malfunction of the fuel injection pump plug.

ICE malfunctions

List of internal combustion engine breakdowns on KamAZ:

• 726 FMI 2 - malfunction of the position indicator of the device responsible for liquid distribution;
• SPN 526313 FMI 6 - defective device that controls the pressure level in the ramp mechanism;
• SPN 520211 FMI 12 - no message from the ABS system;
• SPN 791 FMI 4 - low charge level;
• 523470-2 - there is no voltage in the circuit of the mechanism responsible for resetting the pressure indicators;
• SPN 523613 FMI 16 - working fluid filters are worn out;
• 77 FMI 0 — high revs engine;
• 190-3 - malfunction;
• 110-0 - high motor temperature level;
• 132-4 - failure in air flow distribution;
• 653-0 - damage to the injector power supply system.

Other breakdowns

Code table:

System error codes	Cause of failure
SPN 977 FMI 4	Malfunctions in the operation of the air conditioner chain mechanism
98-1	Number of revolutions exceeded crankshaft
523601-4	Low fuel and oil level
3514-31	The power supply has failed
675-4	Injectors are closed
13688-4	Fuel pump relay shorted to ground
91-4	Fuzzy signal from the sensor responsible for the position of the brake mechanism
171-3	This error stands for a malfunction of the thermometer
1072-4	The valve was shorted to ground
111-3	Strong signal from the antifreeze level indicator
1188-5	There is no connection with the air flow heating relay
110-2	The sensor monitoring the antifreeze temperature is not working correctly
1188-4	There is a short to ground in the pressure valve control circuit.

Serves to monitor engine operation and issue fault codes - blink codes ( see Table of fault codes (Blink codes)).

• The first digit of the blink code is the number of long flashes of the diagnostic lamp;
• The second digit of the blink code is the number of short flashes of the diagnostic lamp.

Engine DTC Table(Blink codes)

Description of the error	Blink- code*	Restrictions	What to do
Gas pedal malfunction		nmax = 1900 rpm	Check the gas pedal connection. Contact the service center
Sensor malfunction atmospheric pressure (the sensor is built into the electronic Control block)		Nmax ≈ 300 hp	You can continue moving. Contact service center
Physical sensor error atmospheric pressure
Malfunction clutch sensor		Nmax = 1900 rpm	Check the clutch sensor. You can continue moving. Do not use the cruise function control.
Main malfunction speed sensor engine ( crankshaft) )		nmax=1600rpm	Check status and connection corresponding frequency sensors engine rotation. You can continue moving. Contact the service center.
Incorrect polarity or relocation of frequency sensors rotation		nmax=1800rpm nmax=1900rpm
Auxiliary malfunction speed sensor engine (camshaft) ( )		nmax=1800rpm
Main malfunction electronic switching relay control unit			Check the main relay and its connection. You can continue moving. Contact the service center.
Fuel injection pump malfunction		Possibly the engine won't start.	Contact the service center immediately.
Position mismatch gas pedals and brake pedals		Nmax≈200 hp	Check the gas pedal, it may be stuck. Contact the service center immediately.
Poor contact sensor rack position (sensor built into the executive injection pump mechanism)		Possibly the engine won't start.	Check the contact of the injection pump plug. Contact the service center immediately!
Sensor malfunction brake pedals		Nmax≈200 hp	Check the brake pedal sensor and brake relay. You can continue moving. Contact the service center.
Electronic malfunction control unit (hardware security)	29, 51-53, 81-86,	Possibly the engine won't start.
Sensor malfunction charge temperature air		Nmax ≈ 300hp	Check temperature sensor charge air. You can continue moving. Contact the service center.
Physical sensor error charge temperature air
Sensor malfunction charge air pressure		Nmax ≈ 250 hp	Check pressure sensor charge air. You can continue moving. Contact the service center.
Physical sensor error charge air pressure
Module fault cruise control			Check lever connection cruise control. You can continue moving. Contact the service center. This error also appears due to pressing several simultaneously control elements of the cruise control lever.
Sensor malfunction cooling temperature liquids			Check temperature sensor coolant. You can continue moving. Contact the service center.
Physical sensor error cooling temperature liquids (		Nmax ≈ 30 hp nmax=1900rpm
Sensor malfunction fuel temperature ( )		nmax =1900rpm	Check the fuel temperature sensor. You can continue moving. Contact the service center.
Physical sensor error fuel temperature
Incorrect signal from multi-stage entry			You can continue moving. Contact the service center.
Exceeding maximum permissible frequency engine rotation		After complete stopping the engine possible new launch	If the excess occurred due to incorrect gear shifting high to low: check engine; If the engine is ok you can start it engine and continue driving. If the engine spontaneously increased speed, do not start the engine! Contact the service center immediately!
Speed ​​signal error car		nmax=1550rpm	Check the connection of the tachograph to electronic control unit. You can continue moving. Contact the service center.
Excess airborne voltage			Check charging battery.
Incorrectly completed electronic duty cycle control unit			This error appears due to turning off the mass before 5s after turning off the ignition or interrupting power supply of the electronic control unit. You can continue moving. Contact the service center
CAN line fault			Check the CAN line connection to other CAN devices (ABS, automatic transmission, etc.). You can continue moving. Contact the service center

According to environmental standards Euro 4 new engines began to be installed on cars of the Kama Automobile Plant in 2013. It was possible to achieve compliance with such stringent standards thanks to the introduction of power units electronic engine control system. This made it possible to carry out early diagnosis of faults, which are now displayed on the instrument panel as KamAZ Euro 4 error codes.

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Car diagnostics

Before the advent of electronic engine control units (ECUs), drivers Kama trucks had to determine the malfunctions of their cars based on own experience. The number of errors during such “diagnosis” was very large until the introduction of ECUs in KamAZ engines. This makes troubleshooting much easier.

If the car has some kind of malfunction, even if it is not visible visually, then a check light lights up on the instrument panel.

What ECU models are equipped with KAMAZ trucks?

Every KamAZ 6520 Euro 4 driver needs to know that only two ECU models are used on engines of this brand:

• Bosch MS6.1;
• ISB CM 2150.

The Bosch MS6.1 control unit is installed on the following motors:

• 740.64-420;
• 740.63-400;
• 740.60-360;
• 740.61-320;
• 740.62-280;
• 740.65-240;
• 820.73-300;
• 820.72-240;
• 820.74-300;
• 820.60-260.

The ISB CM 2150 control unit is used on a larger number of powertrain models;

• 740.64-420;
• 740.63-400;
• 740.60-360;
• 740.61-320;
• 740.62-280;
• 740.65-240;
• 740.75-440;
• 740.74-420;
• 740.73-400;
• 740.72-360;
• 740.71-320;
• 740.70-280.

How to diagnose yourself?

Many drivers are afraid to diagnose KamAZ 43253 Euro 4 with their own hands. There is nothing complicated in this procedure and it is carried out quite simply.

Each electronic unit model uses its own error marking. It is necessary to perform self-diagnosis on KamAZ 65115 Cummins Euro-4 and obtain error codes for each ECU for further decoding.

On vehicles with a Bosch ECU, self-diagnosis of KamAZ 43118 Euro-4 occurs as follows:

1. When you start the engine, the “Check” should light up for three seconds and go out, along with the oil pressure and battery charging lights. This means the system is working.
2. If the signal icon does not go out, it means that the system has detected a malfunction.
3. It remains to find out what is wrong with your KamAZ. For this, the truck has a special button, it is located either on the left under the steering wheel or next to the fuse box.

Location of the "Check" button

More for self-diagnosis The car does not need anything, but at specialized service stations, a special scanner is used to speed up diagnostics.

Equipment and programs for diagnostics of KamAZ Euro 4

At truck service stations for diagnostics trucks use the diagnostic scanner "AVTOAS-CARGO".

On KamAZ vehicles, using this scanner you can diagnose the following engines:

• Cummins 4ISBe, 6ISBe, CM2150C (Euro-3);
• Cummins 4ISBe, 6ISBe, CM2150E (Euro-4);
• KamAZ 740 E3, BOSCH MS 6.1;
• KamAZ 740 E4, BOSCH EDC7UC31;
• YaMZ 656 E3, Elara 50.3763;
• YaMZ 656 E3, M230. E3.

To connect the scanner with a personal computer, an element such as the “ECU-Link 3” adapter is used.

The software required to work with the AVTOAS-CARGO scanner is included with the scanner on a CD. The program can be downloaded to tablets and smartphones from the official website of the manufacturer.

Error codes for engines with BOSCH ECUs

You can get the error code using the button:

• under the steering wheel;
• on the fuse panel.

If you use the button under the steering wheel, then it has an up and down position, while the button itself is in a neutral and middle position.

To obtain a fault code, you must:

1. For 2 seconds, hold down the button, either in the lower or upper position.
2. By blinking the “Check” icon on the instrument panel, determine the malfunction, which is expressed by a code.
3. The number of glares with long intervals shows the first digit of the code, the number of glares with short intervals shows the second.

KAMAZ Euro 4 error code recognition diagram. B in this case code - 24

• 11 – the gas pedal is faulty, with this fault the engine does not develop more than 1900 rpm;
• 12, 13 – atmospheric pressure sensor is faulty;
• 14 – clutch malfunction, with this malfunction the engine does not develop more than 1900 rpm;
• 15 – incorrect operation of the crankshaft; with this malfunction, the engine does not develop more than 1600 rpm;
• 16, 17 – incorrect operation of frequency rotation sensors; with this malfunction, the engine does not develop more than 1800 rpm;
• 18 – incorrect operation of the camshaft; with this malfunction, the engine does not develop more than 1800 rpm;
• 19 – main relay malfunction;
• 21, 22, 24–26 – malfunction of the high pressure fuel pump, with this malfunction the engine does not start;
• 23 – incorrect position of the gas and brake pedals;
• 27 – steering rack malfunction, with this malfunction the car will also not start;
• 28 – brake malfunction;
• 29, 51–53, 81–86, 99 – incorrect operation of the electronic control unit, in this case you will also not be able to start your truck;
• 31, 32 – incorrect operation of the air temperature sensor;
• 33, 34 – incorrect operation of the air pressure sensor;
• 35 – cruise control malfunction;
• 36, 37 - the machine either overheats, or vice versa, does not reach operating temperature;
• 38, 39 – fuel does not reach operating temperature;
• 41 – the signal from the multi-stage input does not correspond to the reference one;
• 42 – permissible engine speed exceeded;
• 43 – incorrect operation of the speedometer;
• 54 – increased voltage in the on-board network;
• 55 – incorrect operation of the control unit;
• 61–67 – incorrect operation of the CAN controller network, it is this system that is responsible for correct operation anti-lock braking system brakes (ABS).

Error codes for engines with ECU ISB CM2150

This is a newer control unit than BOSCH MS 6.1; it is the ISB CM2150 system that is installed on new car engines from Naberezhnye Chelny. These cars are equipped with two “Check” indicators - yellow and red. If the error light is yellow, this means that the car can be driven, but if the light turns red, then your problem does not allow for the possibility of independent movement.

This system has three-digit or four-digit error codes. But they are obtained in the same way as in the previous case.

• 111 – incorrect operation of the engine control module;
• 115 – incorrect operation of the engine speed sensor;
• 143 – oil pressure has decreased;
• 146 – coolant overheating;
• 151 – the coolant does not reach operating temperature;
• 197 – insufficient coolant;
• 214 – oil overheating;
• 233 – coolant pressure is reduced, the pump is faulty;
• 234 – high engine speed;
• 235 – insufficient coolant;
• 245 – voltage in the fan control circuit is reduced;
• 261 – increased fuel temperature;
• 275 – the fuel pump is not working correctly;
• 281 – the high pressure valve is not working correctly;
• 351 – error in the operation of the injector power supply;
• 415 – insufficient pressure oils;
• 422 – insufficient coolant;
• 425 – oil temperature exceeded;
• 428 – incorrect;
• 429 – increased voltage in the circuit fuel sensor;
• 431 – error in the idle circuit;
• 432 – does not work correctly;
• 433 – insufficient fuel pressure;
• 434 – network power disappeared after turning off the engine;
• 435 – insufficient oil pressure;
• 441 – insufficient battery charging;
• 442 – battery recharge;
• 449 – increased fuel pressure;
• 595 – turbocharging speed exceeded;
• 596 – incorrect operation of the generator, high voltage;
• 598 – insufficient voltage in the generator circuit;
• 687 – low turbocharger speed
• 689 – error in the operation of the engine speed sensor;
• 1139 – incorrect operation of injector No. 1;
• 1141 – incorrect operation of injector No. 2;
• 1142 – incorrect operation of injector No. 3;
• 1143 – incorrect operation of injector No. 4;
• 1144 – incorrect operation of injector No. 5;
• 1145 – incorrect operation of injector No. 6;
• 2265 – the starting pump is not working correctly, the voltage is higher than normal;
• 2266 – the starting pump is not working correctly, the voltage is below normal;
• 2292 – the fuel metering device does not work correctly;
• 2293 – the fuel metering device does not work correctly;
• 2377 – the voltage in the fan control circuit is exceeded;
• 2555 – in the incoming air heating system the voltage is higher than normal;
• 2556 – in the incoming air heating system, the voltage is below normal;
• 2558 – voltage below normal in the auxiliary starting device circuit;
• 2973 – incorrect operation of the pressure sensor in the intake manifold.

The above-described method of receiving errors is called the method using blink codes (taking data from blinking “Check” signaling devices). More detailed data can be obtained using computer equipment. There, error codes are displayed on the screen in the format “SPN number, FMI number”.

A list of errors and malfunctions in this format, there are many more of them than when diagnosing using blink codes:

• SPN 94 FMI 1 – insufficient pressure in the circuit low pressure fuel;
• SPN 94 FMI 0 – excessive pressure in the low pressure fuel circuit;
• SPN 106 FMI 4 – insufficient signal from the air pressure sensor in the manifold;
• SPN 106 FMI 3 – signal from the manifold air pressure sensor is too strong;
• SPN 132 FMI 4 – the signal from the air flow sensor is too weak;
• SPN 132 FMI 3 – the signal from the air flow sensor is too strong;
• SPN 190 FMI 4 – weak signal with ;
• SPN 723 FMI 4 – weak signal from the sensor camshaft;
• SPN 105 FMI 4 – weak signal from the air temperature sensor in the manifold;
• SPN 105 FMI 3 – signal from the manifold air temperature sensor is too strong;
• SPN 629 FMI 12 – malfunction in the control unit;
• SPN 523613 FMI 7 – malfunction of the rail pressure control valve;
• SPN 108 FMI 4 – weak signal from the atmospheric pressure sensor;
• SPN 108 FMI 3 – signal from the atmospheric pressure sensor is too strong;
• SPN 523470 FMI 11 – malfunction of the pressure relief valve in the rail;
• SPN 174 FMI 16 – fuel temperature is too high;
• SPN 110 FMI 4 – weak signal from the antifreeze temperature sensor;
• SPN 110 FMI 3 – the signal from the antifreeze temperature sensor is too strong;
• SPN 110 FMI 18 – power unit temperature is too high;
• SPN 520224 FMI 12 – error in the control unit;
• SPN 520223 FMI 11 – control unit reset error;
• SPN 3050 FMI 1 – bad job exhaust gas neutralizer;
• SPN 3050 FMI 19 – no signal is received from the SCR system;
• SPN 190 FMI 8 – crankshaft position sensor is not synchronized;
• SPN 190 FMI 5 – failure of the crankshaft position sensor;
• SPN 723 FMI 8 – incorrect operation of the camshaft position sensor;
• SPN 723 FMI 2 – incorrect operation of the camshaft position sensor;
• SPN 723 FMI 5 – no signal is received from the camshaft position sensor;
• SPN 84 FMI 11 – speed sensor is faulty;
• SPN 110 FMI 0 – excessive engine temperature;
• SPN 172 FMI 0 – excessive air temperature in the intake manifold;
• SPN 74 FMI 0 – excessively high engine speed;
• SPN 2634 FMI 5 – no current in the main relay circuit;
• SPN 2634 FMI 4 – short circuit to ground of the main relay circuit;
• SPN 2634 FMI 3 – short to power in the main relay circuit;
• SPN 1351 FMI 5 – lack of current in the air conditioner relay circuit;
• SPN 1351 FMI 4 – air conditioner relay circuit short to ground;
• SPN 1351 FMI 3 – short to power in the air conditioner relay circuit;
• SPN 1213 FMI 5 – no current in the “CHECK ENGINE” circuit;
• SPN 1213 FMI 4 – short to ground in the “CHECK ENGINE” circuit;
• SPN 1213 FMI 3 – short to power in the “CHECK ENGINE” circuit;
• SPN 94 FMI 4 – weak signal from the low pressure fuel sensor;
• SPN 94 FMI 3 – signal from the low pressure fuel sensor is too strong;
• SPN 91 FMI 13 – incorrect signal from track 1 of the gas pedal position sensor;
• SPN 29 FMI 13 – incorrect signal from track 2 of the gas pedal position sensor;
• SPN 158 FMI 1 – insufficient voltage in the on-board circuit;
• SPN 158 FMI 0 – excessive voltage in the on-board circuit;
• SPN 651 FMI 5 – failure of the injector of cylinder 1;
• SPN 651 FMI 4 – ground fault of injector 1 cylinder;
• SPN 651 FMI 3 – Short to power supply to injector 1 cylinder;
• SPN 652 FMI 5 – failure of injector of cylinder 2;
• SPN 652 FMI 4 – cylinder 2 injector short circuit to ground;
• SPN 652 FMI 3 – Short to power supply to injector 2 of cylinder;
• SPN 653 FMI 5 – failure of cylinder 3 injector;
• SPN 653 FMI 4 – cylinder 3 injector short circuit to ground;
• SPN 653 FMI 3 – short to power supply to injector 3 of cylinder;
• SPN 654 FMI 5 – failure of the 4th cylinder injector;
• SPN 654 FMI 4 – cylinder 4 injector short circuit to ground;
• SPN 654 FMI 3 – short to power supply to the injector of cylinder 4;
• SPN 2791 FMI 5 – no voltage in the EGR valve circuit;
• SPN 2791 FMI 4 – short to ground in the EGR valve circuit;
• SPN 2791 FMI 3 – short to ground in the EGR valve circuit;
• SPN 523470 FMI 5 – no voltage in the pressure relief valve circuit;
• SPN 523470 FMI 4 – short to ground in the pressure relief valve circuit;
• SPN 523470 FMI 3 – short to ground in the pressure relief valve circuit;
• SPN 630 FMI 12 – malfunction of the RAM control unit;
• SPN 628 FMI 12 – malfunction of the ROM control unit;
• SPN 1188 FMI 5 – there is no voltage in the turbocharger pressure valve regulator circuit;
• SPN 1188 FMI 4 – short to ground in the turbocharger pressure valve regulator circuit;
• SPN 1188 FMI 3 – short to ground in the turbocharger pressure valve regulator circuit;
• SPN 523613 FMI 5 – there is no voltage in the circuit leading to the ramp regulator valve;
• SPN 523613 FMI 4 – short to ground in the circuit leading to the ramp regulator valve;
• SPN 523613 FMI 3 – short to ground in the circuit leading to the ramp regulator valve;
• SPN 977 FMI 5 – no voltage in the fan relay circuit;
• SPN 977 FMI 4 – short to ground in the fan relay circuit;
• SPN 977 FMI 3 – short to ground in the fan relay;
• SPN 645 FMI 5 – there is no voltage in the tachometer circuit;
• SPN 645 FMI 4 – short to ground in the tachometer circuit;
• SPN 645 FMI 3 – short to ground in the tachometer circuit;
• SPN 107 FMI 16 – air filter needs to be replaced;
• SPN 98 FMI 4 – poor signal from the oil pressure sensor;
• SPN 98 FMI 3 – signal from the oil pressure sensor is too strong;
• SPN 157 FMI 4 – poor signal from the fuel pressure sensor in the rail;
• SPN 157 FMI 3 – signal from the fuel pressure sensor in the rail is too strong;
• SPN 157 FMI 1 – insufficient fuel pressure in the rail;
• SPN 157 FMI 0 – excessive fuel pressure in the rail;
• SPN 639 FMI 19 – controller circuit broken automatic transmission transmission (automatic transmission);
• SPN 91 FMI 2 – gear sensor tracks are incorrectly located;
• SPN 1136 FMI 12 – the temperature sensor in the controller is faulty;
• SPN 523601 FMI 4 – weak signal from the refrigerant pressure sensor;
• SPN 523601 FMI 3 – signal from the refrigerant pressure sensor is too strong;
• SPN 1321 FMI 5 – no connection with the starter interlock relay;
• SPN 1321 FMI 4 – starter interlock relay is shorted to ground;
• SPN 1321 FMI 3 – starter interlock relay is shorted to power;
• SPN 3509 FMI 31 – 5V failure in the power supply of sensors 1
• SPN 3510 FMI 31 – 5V failure in the power supply of sensors 2
• SPN 3511 FMI 31 – 5V failure in the power supply of sensors 3
• SPN 3512 FMI 31 – 5V failure in the power supply of sensors 4
• SPN 3513 FMI 31 – 5V failure in the power supply of sensors 5
• SPN 3514 FMI 31 – the 12 V sensor power supply is faulty;
• SPN 106 FMI 2 – air pressure sensor does not work correctly;
• SPN 110 FMI 2 – antifreeze temperature sensor does not work correctly;
• SPN 173 FMI 0 – excessive antifreeze temperature;
• SPN 175 FMI 0 – excessive oil temperature;
• SPN 174 FMI 0 – excessive fuel temperature;
• SPN 174 FMI 4 – weak signal from the fuel temperature sensor;
• SPN 174 FMI 3 – signal from the fuel temperature sensor is too strong;
• SPN 596 FMI 4 – weak signal from the CC control knob;
• SPN 596 FMI 3 – signal from the CC control knob is too strong;
• SPN 655 FMI 5 – failure of the cylinder 5 injector;
• SPN 655 FMI 4 – injector of cylinder 5 is shorted to ground;
• SPN 655 FMI 3 – injector of cylinder 5 is short-circuited to power;
• SPN 656 FMI 5 – failure of the 6th cylinder injector;
• SPN 656 FMI 4 – injector of cylinder 6 is shorted to ground;
• SPN 656 FMI 3 – injector of cylinder 6 is shorted to power;
• SPN 657 FMI 5 – failure of the cylinder 7 injector;
• SPN 657 FMI 4 – injector of cylinder 7 is shorted to ground;
• SPN 657 FMI 3 – injector of cylinder 7 is shorted to power;
• SPN 658 FMI 5 – failure of the 8th cylinder injector;
• SPN 658 FMI 4 – injector of cylinder 8 is shorted to ground;
• SPN 658 FMI 3 – injector of cylinder 8 is short-circuited to power;
• SPN 1347 FMI 5 – no connection with the fuel pump relay;
• SPN 1347 FMI 4 – fuel pump relay is shorted to ground;
• SPN 1347 FMI 3 – fuel pump relay is shorted to power;
• SPN 3050 FMI 15 – exhaust gas converter is faulty;
• SPN 3050 FMI 0 – exhaust gas converter is faulty;
• SPN 729 FMI 5 – no connection with the air heating relay;
• SPN 729 FMI 4 – air heating relay is shorted to ground;
• SPN 729 FMI 3 – air heating relay is shorted to power;
• SPN 1188 FMI 5 – no connection with exhaust gas bypass valve-1;
• SPN 1188 FMI 4 – exhaust gas bypass valve-1 is shorted to ground;
• SPN 1188 FMI 3 – exhaust gas bypass valve-1 is shorted to power;
• SPN 1189 FMI 5 – no connection with exhaust gas bypass valve-2;
• SPN 1189 FMI 4 – exhaust gas bypass valve-2 is shorted to ground;
• SPN 1189 FMI 3 – exhaust gas bypass valve-2 is shorted to power;
• SPN 91 FMI 4 – poor signal from the pedal position sensor;
• SPN 1137 FMI 15 – overheating via TOG channel No. 1;
• SPN 1138 FMI 15 – overheating via TOG channel No. 2;
• SPN 190 FMI 12 – high resistance of DPKV;
• SPN 723 FMI 12 – high resistance DPRV;
• SPN 1137 FMI 4 – weak signal from TOG sensor No. 1;
• SPN 1137 FMI 3 – strong signal from TOG sensor No. 1;
• SPN 1138 FMI 4 – weak signal from TOG sensor No. 2;
• SPN 1138 FMI 3 – strong signal from TOG sensor No. 2;
• SPN 171 FMI 4 – weak signal from the ambient temperature sensor;
• SPN 171 FMI 3 – strong signal from the ambient temperature sensor;
• SPN 29 FMI 4 – weak signal from pedal position sensor 2;
• SPN 29 FMI 3 – strong signal from pedal position sensor 2;
• SPN 29 FMI 5 – failure of pedal position sensor 1;
• SPN 91 FMI 5 – failure of pedal position sensor 2;
• SPN 1318 FMI 14 – inconsistent operation of TOG sensors No. 1 and TOG No. 2;
• SPN 175 FMI 16 – the oil temperature in the power unit is too high;
• SPN 175 FMI 4 – weak signal from the power unit;
• SPN 175 FMI 3 – signal from the oil temperature sensor in the power unit is too strong;
• SPN 100 FMI 1 – low oil pressure;
• SPN 1072 FMI 5 – no connection with the engine brake valve;
• SPN 1072 FMI 4 – engine brake valve is shorted to ground;
• SPN 1072 FMI 3 – engine brake valve is shorted to power;
• SPN 84 FMI 0 – the vehicle has exceeded the technically permissible speed;
• SPN 102 FMI 0 – too high pressure turbocharging;
• SPN 100 FMI 4 – weak signal from the oil pressure sensor;
• SPN 100 FMI 3 – signal from the oil pressure sensor is too strong;
• SPN 110 FMI 5 – no connection with ;
• SPN 172 FMI 5 – failure of the air temperature sensor in the manifold;
• SPN 174 FMI 5 – failure of the fuel temperature sensor;
• SPN 175 FMI 5 – failure of the oil temperature sensor;
• SPN 111 FMI 4 – weak signal from the antifreeze level sensor;
• SPN 111 FMI 3 – signal from the antifreeze level sensor is too strong;
• SPN 723 FMI 3 – strong signal from the camshaft position sensor.

Sometimes on the forums you can come across the question what kind of error is SPN 791, SPN 520211 or SPN 4335. In the list of errors for KamAZ 65117, or KamAZ Euro 4 Cummins 4336, and other models, there are no such codes. The reason for their appearance may lie in the fact that drivers incorrectly removed data from the ECU or the truck has some kind of non-serial electronic system.

How to reset errors on KamAZ Euro 4

Quite often, a situation occurs when, during diagnostics, you consider that the breakdown is insignificant and no repairs are required yet, since it does not affect the operation. However, its presence imposes some restrictions on the operation of the car: it may not start, or the engine speed may be limited.

Fault codes can help the car owner not only detect a breakdown, but also eliminate it. Therefore, without on-board computers Vehicles have not been produced recently. We invite you to find out what they are, how to correctly diagnose and how to then erase errors from the memory of the on-board computer.

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Car diagnostics

As you already understand, the KAMAZ vehicle diagnostic mode is necessary to check the functioning of the internal combustion engine and read fault combinations. And in order to read these codes, you need to correctly diagnose and optimally decipher them. To check your car for breakdowns, you need to follow these steps:

1. First, find the motor diagnostic switch. If you don’t know where it is located, then read about it in the operating instructions for your KamAZ. As a rule, it is located on the instrument panel. This switch must be held in the up and down positions for more than two seconds.
2. When you release the switch, LED flashlight will start flashing several times with pauses: this will be the error combination. The engine failure code itself will be three-digit, and accordingly, it will blink three times. For example, code 123 will be represented by one blink with a pause, then two blinks and, accordingly, three blinks with pauses.
3. The next time you press the car diagnostic switch, the LED will blink for the next fault combination. This way you can read all the codes stored in the control unit from the instrument panel. When the LED shows the last error in the electronic unit’s memory, all codes will be read again.

It should be noted that this method check does not allow you to accurately determine whether the code shown indicates active fault, which is in the car, or the combination was simply not erased from the ECU memory. This can only be determined with special diagnostic equipment. But if you don’t want to pay money to check the internal combustion engine, then this diagnostic method will suit you.

Decoding codes

Let's look at the example of failure code 425:

• I - indicates that the diagnostic mode switch has been pressed for more than two seconds;
• II - indicates that the diagnostic mode switch is in the off position;
• III - indicates a pause between flashes LED lamp while reading the code.
• The first number in this case is the digit of the code itself (in the case of combination 425, the lamp will blink four times);
• The second number - in our case it is 2, respectively, will blink twice;
• The third number - in the case of our example, it is 5, which means the lamp will blink five times.

If you have installed an upgraded instrument cluster on your KamAZ, then the error combinations will be displayed in a different format, namely in the form of numerical values.

Now let’s look at decoding fault combinations.

Sensor failures

Combination	Decoding	What to do
221	The electronic control unit reports a breakdown of the fuel pedal position sensor.	You should check the connection of the sensor, as well as the electrical circuit, to identify possible breaks or short circuits.
232	This error code indicates a breakdown of the atmospheric pressure sensor. In particular, the signal from the device may not match the boost pressure sensor.	It is necessary to check the state of connection of the device to the control unit, as well as the electrical wiring. As a rule, when such errors occur, a short circuit or break is detected in the network.
335	This error informs the Kamaz car owner about malfunctions in the wiring of the output stage for controlling the traffic limiter lamp.	You should check the LED beacon directly for damage. It may need to be replaced. It also makes sense to check the wiring; there may be breaks or short circuits in it. First of all, pay attention to the soldered sections in the circuit.
334	There is a malfunction in the boost control system.	In this case, you can also check the circuit for shorts. However, first check working condition and connection actuator boost.
231	This malfunction informs the motorist about an incorrect signal coming from the boost pressure sensor to the electronic control unit.	To eliminate the breakdown, you should check the connection and operating condition of the pressure control device itself. If its condition is assessed as working, then the circuit must also be checked.
124	An incorrect voltage reading is recorded in the on-board network: it can be either too low or very high.	First of all, check the condition of the on-board network and its connection to the battery. Try to eliminate the problem on your own, but if you can’t, be sure to seek help from a service station, since it is not recommended to operate the car for a long time with such a problem.
246, 241	Problems with the temperature control device or antifreeze level in the cooling system.	In these cases, it is necessary to spend time checking the functionality of two sensors: level control and refrigerant temperature control. You should also check the electrical circuit for opens or shorts.
345	Failures in signal transmission from the exhaust gas pressure sensor were detected.	To eliminate this breakdown, you should carefully check the electrical circuit of the sensor for possible breaks or short circuits. In particular, you need to pay attention to the circuit segment where the sensor connects to the exhaust pipe.
113	The electronic control unit reports detected malfunctions in the operation of the camshaft speed sensor.	In this case, it is necessary to check the connection of the camshaft speed monitoring device. If the connection status is assessed as normal, then you need to check the functionality of the sensor itself.
112	The crankshaft speed monitoring device sends an incorrect signal to the control unit.	As with the camshaft sensor, the crankshaft speed monitoring device should be checked. If it is working properly, then you need to check the electrical wiring.

ICE malfunctions

Combination	Decoding	What to do
515	Incorrect operation of the misfire control system in several cylinders was detected.	In order to restore the correct operation of the system, you should check the condition of the plugs and cables connecting the engine cylinder injectors.
222	The clutch condition diagnostic function is not performed correctly. In particular, the electronic control unit receives an incorrect signal.	It is necessary to check the connection of the clutch pedal position monitoring device. The sensor itself may need to be replaced. It would also be advisable to check the connection CAN bus to other devices of this type.
155	Kamaz on-board computer registered limited quantity fuel injections.	In this case, some changes may be noticed in the movement of the vehicle. In particular, engine power may be lost. In this case, you can continue driving, but the breakdown must be eliminated as quickly as possible.
153	One of the microcircuits of the cylinder control output stages is faulty.	In such cases: the communication line with the microcircuit may be broken; the microcircuit can be in testing mode for a long time; the engine may simply stall. It may be necessary to resolder the chips. We recommend that you contact a service center for assistance.
324	Incorrect vehicle speed measurement.	If you encounter this error code, you must: diagnose the connection, and also check the operating condition of the KamAZ speed control device. diagnose the state of connection of the sensor circuit to the tachograph; It is also worth checking the quality of the CAN bus connection to the electronic control unit and other devices of this type.
258	The electronic control unit has detected irregularities in the operation of the high-pressure fuel pump metering mode.	You should check the condition and connection of the elements hydraulic system. In particular, we are talking about high and low pressure hydraulic circuits.
226	The control unit reports that the maximum permissible crankshaft rotation range has been exceeded.	It is possible that the range was exceeded as a result of incorrect shifting of the gear lever from high gear to a lower one. If the engine is running as before, you can continue driving. If the motor itself has exceeded the crankshaft rotation range, then vehicle needs to be shut down urgently. Subsequent operation of the machine is only possible if the error is corrected.
231	Registered incorrect operation boost pressure systems.	First of all, you should check the operating condition and connection to the electrical circuit of the boost pressure sensor.

Reset error

If you have checked your car for breakdowns and eliminated them, then you will need to erase the error code from the control unit’s memory. Otherwise, the code remaining in memory will be read again the next time the car is diagnosed.

1. To reset the code after checking the car, turn off the engine.
2. Turn off the ignition and open the hood.
3. Disconnect the negative terminal of the battery.
4. Wait one minute.
5. Reconnect the terminal.

At this point, the error resetting process can be considered complete. Please note that the codes presented in this article are incomplete. There are many faults that are not included in this material, but the most common ones have been discussed.

You also need to take into account that with the release of each new Kamaz model, the database of combinations is constantly updated.

Video “Kamaz vehicles with Cumminus engine”

This video shows a description of a Kamaz vehicle with a Cumminus engine, and also describes all the properties and characteristics of the vehicle.
Attention!

The fault indication depends on the specific vehicle model.

(color - red) Intermittent sound signal

(with engine running)

The oil pressure in the engine lubrication system is not normal
The vehicle is prohibited from moving until it is fixed.

• malfunctions.
• stop the engine; check the oil level in the engine crankcase (see section 6 "»).

Maintenance
If the oil level in the engine crankcase is normal and the emergency oil pressure indicator lamp does not go out, then you need to contact a service center.

The fault indication depends on the specific vehicle model.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Possible cause of the malfunction:

Air filter clogged Troubleshooting suggestions: Replace air filter

The fault indication depends on the specific vehicle model.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired.(See section 6 “Maintenance”). Absent charging current

Air filter clogged
generator Check tension drive belt

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired.

Air filter clogged generator, adjust if necessary (see the Manual for the design, repair and maintenance of a KAMAZ vehicle). If the drive belt tension is OK, check the electrical equipment at a service center.
Vehicle movement is limited (with increased caution).

Check electrical equipment at a service center.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired.(Orange color)

Air filter clogged Malfunction in the engine management system
Vehicle movement is limited (with increased caution). Contact the service center.

• Carry out engine diagnostics:
• malfunctions.
• stop the car taking into account the traffic situation; park the car;
• carry out engine diagnostics. If the malfunction identified by the codes could not be eliminated, then you should contact the service center to resolve the malfunction.

This video shows a description of a Kamaz vehicle with a Cumminus engine, and also describes all the properties and characteristics of the vehicle.
If, as a result of diagnostics of the KAMAZ engine, fault codes SPN 95 and FMI 7 are displayed on the instrument cluster monitor, it is necessary to replace the coarse and fine cleaning fuel.

Check electrical equipment at a service center.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired.

Intermittent beep

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. The particulate filter is full of soot.

Air filter clogged

Contact the service center.
It is possible to diagnose the engine.
Clean or replace particulate filter at the service center.

Emergency cooling temperature indicator (color red)

Intermittent beep

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Coolant overheating

Check electrical equipment at a service center.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Shutdown automatic mode operation of the engine fan drive clutch

Air filter clogged Vehicle movement is limited (with increased caution).

• Carry out engine diagnostics:
• malfunctions.
• put the car on the parking brake;
• check the coolant level in expansion tank(See section 6. “Maintenance”).

Provide adequate airflow to the radiator. For a vehicle with a forced control of the engine fan drive, turn on the clutch using the switch.
If the coolant level is normal and the warning light and warning light do not go out, you should contact a service center.

If the automatic mode of operation of the fan drive clutch is turned off, you must contact a service center.

Check electrical equipment at a service center.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Malfunction in the exhaust gas aftertreatment system and/or engine

Air filter clogged generator, adjust if necessary (see the Manual for the design, repair and maintenance of a KAMAZ vehicle). If the drive belt tension is OK, check the electrical equipment at a service center.
Carry out engine diagnostics. To decipher fault codes and troubleshoot problems, contact a service center.

Check electrical equipment at a service center.
the lamp is on

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Low contamination of the particulate filter with soot

Air filter clogged Clean the particulate filter using one of the following methods:

• change the process of operating the car: it is necessary to operate the car under load for at least 20 minutes with a crankshaft speed of at least 1200 min -1);
• contact the service center.

Check electrical equipment at a service center.
lamp flashes

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Average clogging of the particulate filter with soot

Air filter clogged

• change the process of operating the car: it is necessary to operate the car under load for at least 20 minutes with a crankshaft speed of at least 1200 min -1;
• run forced cleaning on standing car using the particulate filter cleaning button switch (see subsection “Cleaning the particulate filter”);
• contact the service center.

Check electrical equipment at a service center.

Check electrical equipment at a service center.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. High contamination of the particulate filter with soot

Air filter clogged The electronic engine management system includes engine torque limiting.
Clean the particulate filter using one of the following methods:

• start cleaning with the vehicle stationary using the particulate filter cleaning button switch (see subsection “Cleaning the particulate filter”);
• contact the service center.

The fault indication depends on the specific vehicle model.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Cabin hydraulic locks did not close

Air filter cloggedThe vehicle is prohibited from moving until the fault is eliminated.
Check that the locks are closed. If at least one of the locks is not closed, it is necessary to raise and lower the cabin (see subsection Raising and lowering the cabin). The hydraulic locks should close automatically.
If warning lamps continue to light, contact a service center.

The fault indication depends on the specific vehicle model.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Presence of water in the filter rough cleaning fuel

Air filter clogged Drain the sediment from the fuel coarse filter (see section 6 “Maintenance”). Continue draining until clean water comes out. diesel fuel no signs of water.
After draining the sludge, pump fuel system.

(color - blue)

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Low level AdBlue fluids in the neutralization system

Air filter clogged Operation of the system without AdBlue neutralizing liquid is not permitted.
Check the level of the AdBlue neutralizing fluid (see section 6 “Maintenance”) and top up if necessary.
If, when diagnosing the neutralization system, the following fault codes are displayed on the display of the instrument cluster, add neutralizing fluid:

• SPN 1761 and FMI 18 (Cummins engine): “The urea level sensor readings are below the low level»;
• SPN 1761 and FMI 1 (Cummins engine): “The urea level sensor reading is below the empty tank level mark.”

If the neutralizing fluid level is normal and the warning light does not go out, contact a service center.

The fault indication depends on the specific vehicle model.

Intermittent beep

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Air pressure in the primary circuit brake system below from 450 to 550 kPa (from 4.5 to 5.5 kgf/cm2)

The fault indication depends on the specific vehicle model.

Intermittent beep

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. The air pressure in the second circuit of the brake system is lower from 450 to 550 kPa (from 4.5 to 5.5 kgf/cm2)

The fault indication depends on the specific vehicle model.

Intermittent beep

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. The air pressure in the third circuit of the brake system is lower from 450 to 550 kPa (from 4.5 to 5.5 kgf/cm2)

The fault indication depends on the specific vehicle model.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. The air pressure in the IV circuit of the brake system is lower from 450 to 550 kPa (from 4.5 to 5.5 kgf/cm2)

Air filter cloggedThe vehicle is prohibited from moving until the fault is eliminated.

• Carry out engine diagnostics:
• put the car on the parking brake;
• check for leaks compressed air in the pneumatic drive due to leaks in the connections of pipelines and flexible hoses. Check the functionality of the brake system pneumatic devices;
• troubleshoot;
• After eliminating the malfunction, let the engine run while the vehicle is stationary to replenish the supply of compressed air;
• continue driving only after the warning lights go out and the pressure in the brake system circuits reaches from 6.5 to 8.0 kgf/cm2.

If the malfunction cannot be eliminated, the lamps continue to light, then contact the service center.

Indicator of reserve fuel level (color - orange)

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Fuel level is less than 13% of the fuel tank volume Air may enter the engine fuel supply system

Air filter clogged It is not recommended to operate the engine when the reserve fuel level indicator is activated.
If air gets into the fuel supply system, it is necessary to refill fuel tank fuel and bleed the fuel system before starting the engine.
For bleeding the fuel coarse filter, see Section 6 “Maintenance”.
In a vehicle with a KAMAZ engine, to pump the fine fuel filter:

• Unscrew the air bleed screw from the filter housing
• using a manual fuel pump, bleed the system until air-free fuel emerges from the threaded hole;
• after that, put the screw in place and tighten it to a torque of (6±1) Nm (see Fig. Fine fuel filter f. UFI or f. MANN-HUMMEL).

1 - air bleed screw; 2 - fuel pressure sensor

Check electrical equipment at a service center.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Vehicle ABS/ASR malfunction

Air filter clogged The vehicle may be driven with extreme caution.

• stop the car;
• put the car on the parking brake;
• carry out ABS diagnostics.

To decipher fault codes and troubleshoot the brake system, you must contact a service center.
After troubleshooting the system, it is necessary to remove passive errors from the memory of the ABS electronic unit in order to avoid their accumulation (no more than 50) and subsequent blocking of the system. To remove passive errors, you must contact a service center.

Check electrical equipment at a service center.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Trailer ABS malfunction

Air filter clogged The vehicle may be driven taking into account the road conditions.
Contact the service center.

Check electrical equipment at a service center.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. There is no communication via the data bus with the ABS

Air filter clogged The vehicle may be driven with extreme caution. Contact the service center.

(for individual configurations)

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. The oil level in the engine crankcase is above normal

Air filter clogged generator, adjust if necessary (see the Manual for the design, repair and maintenance of a KAMAZ vehicle). If the drive belt tension is OK, check the electrical equipment at a service center.

• Carry out engine diagnostics:
• malfunctions.
• put the car on the parking brake;
• check the oil level in the engine crankcase (see section 6 “Maintenance”, subsection “Checking the oil level in the engine crankcase”). Drain the oil until required level, to avoid premature wear oil seals

(for individual configurations)

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired.

Air filter clogged generator, adjust if necessary (see the Manual for the design, repair and maintenance of a KAMAZ vehicle). If the drive belt tension is OK, check the electrical equipment at a service center.

• Carry out engine diagnostics:
• malfunctions.
• put the car on the parking brake; check the oil level in the engine crankcase (see section 6 “Maintenance”, subsection “Checking the oil level in the engine crankcase”). Add oil to the correct level as running the engine with low oil levels may result in poor performance or serious engine damage.

(for individual configurations)

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. The oil level in the engine crankcase is below normal

Air filter cloggedVehicle traffic is prohibited.

• urgently stop the car taking into account the traffic situation;
• malfunctions.
• put the car on the parking brake; check the oil level in the engine crankcase (see section 6 “Maintenance”, subsection “Checking the oil level in the engine crankcase”). Add oil to the required level.

The fault indication depends on the specific vehicle model.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Malfunction in the air suspension control system

Air filter clogged Contact the service center.

Check electrical equipment at a service center.

Check the engine for leaks. If an oil leak is detected, driving the vehicle is prohibited until the problem is repaired. Low coolant level in the expansion tank

Air filter clogged generator, adjust if necessary (see the Manual for the design, repair and maintenance of a KAMAZ vehicle). If the drive belt tension is OK, check the electrical equipment at a service center.

• Carry out engine diagnostics:
• malfunctions.
• put the car on the parking brake;
• check the coolant level in the expansion tank (see section 6 “Maintenance”).