Many of us have encountered such a problem as turning on the engine icon (Check engine...), the appearance of which frightens car drivers. We offer you the 5 most common reasons why dashboard The check engine light comes on.
The engine warning light usually appears without warning. Reason appearance of Check engine cannot be immediately understood. Even if the car has auto diagnostics (for example, in cars such as ,), which scans all car systems for errors and, if any, displays a decryption on the information panel, the reasons for the appearance of the check engine light will not be decrypted.
For most drivers, the appearance of this warning icon on the dashboard means the need to urgently go to an auto repair shop to diagnose and eliminate the reason why the "Check Engine" warning sign appeared. But in fact, in most cases, when the “Check” indication appears, it is possible, and in some cases, perhaps, to eliminate the cause yourself without a trip to a car service center, which will save you money.
1. Replace the oxygen sensor (lambda probe)
The oxygen sensor in your car is part of the exhaust system exhaust gases, which controls how much oxygen is not burned in the engine combustion chamber. This sensor helps control the vehicle's fuel consumption. Malfunction oxygen sensor(lambda probe) means that car computer receives incorrect data, which can significantly increase fuel consumption and reduce engine power. Most cars have 2 to 4 oxygen sensors. If you have a home car scanner errors, then by connecting it to the car, you can easily find out which sensor needs to be replaced.
For what reason does the oxygen sensor in a car become unusable? Over time, the sensor becomes covered with a layer of waste and motor oil(oil soot), which reduces the accuracy of reading sensor readings for regulation gasoline mixture and optimal distribution. A malfunction of the oxygen sensor in a car leads not only to, but also to increased levels of harmful substances CO2 in the exhaust.
What to do: If you don't replace the faulty one car sensor oxygen, this may lead to failure of your car’s catalyst (it may burst), which will result in expensive repairs. The cost of new catalysts is very high due to the precious alloys they contain. On some cars, there are several catalysts, the cost of which can reach up to 90,000 rubles. So don't delay replacing the sensor. Although replacing the sensor and its cost is not very small, it is not commensurate with the cost of the exhaust gas catalyst system. You can also save on replacement costs by doing it yourself. Many car manuals contain detailed instructions, how you can replace the oxygen sensor yourself. If you know where the oxygen sensor is located, then you will not have to worry a lot of work disconnect the faulty lambda probe and replace it with a new one. Remember to wait to replace this important element You can't pull!
2. Check the fuel filler cap
Many drivers, in most cases, when the check engine light appears, will think about serious problems in a car engine, but they don’t even think to check for leaks fuel system which may be broken due to a defect or insufficiently tightened neck cap fuel tank. This is a very common reason for the appearance of the "Check" engine icon.
Reason for the error: Leakage of the fuel system due to the passage of air through the fuel tank filler cap will increase the vehicle's fuel consumption, to which the vehicle's diagnostic system will generate an engine error by turning on the "Check engine" indication on the vehicle's instrument panel.
What to do: If, when the “Check” indication appears, your car has not lost power, and there are no audible signs of engine damage (engine knocking, humming, creaking, etc.), then first check the gas tank for leaks. Your gas cap may be cracked or not tightened enough. If the cap was not tightened enough, then after tightening it all the way, continue driving the car for a while to see if the engine error disappears. To prevent a check engine light from appearing for this reason, check your fuel filler cap regularly. Remember that the cover must be replaced with a new one periodically!
3. Car exhaust catalyst
An automobile catalyst helps a car make engine exhaust gases more environmentally friendly. It converts carbon monoxide and other harmful substances into harmless compounds. If your exhaust catalyst has become unusable, you will notice it not only when the engine icon (check) appears, but also long before that, when the power the car will fall 2 times. For example, when you press the gas pedal, the car will not have the same good speakers acceleration
What can cause a car catalyst to fail: if you regularly service your car in accordance with the maintenance regulations car company, then the catalyst should not fail. main reason failure of the catalyst, this is not timely replacement a faulty oxygen sensor, as well as non-regular replacement of spark plugs when the expiration date expires. When the oxygen sensor or spark plugs are faulty, the conversion of carbon monoxide in the catalyst into harmless chemical elements stops, which leads to overheating of the catalyst, which can therefore fail.
What to do: If your catalyst has become unusable, then you cannot drive a car, since the engine will not work correctly, warning about this by an indication on the dashboard with an engine icon (check). Also, your fuel consumption will be greatly increased, and there will be no engine thrust. Although replacing a catalyst is a very expensive repair, there is no escape from repairs. Although there is an alternative to replacing the catalyst with a flame arrester, this is not a 100 percent option. Unfortunately, if you are not an experienced auto mechanic, you will not be able to replace a faulty exhaust gas catalyst yourself. In any case, you will have to contact a car repair shop. Remember that timely replacement of oxygen sensors and spark plugs protects your catalyst from damage!
4. Replace the mass air flow sensor
Sensor mass flow air control regulates how much air must be added to the gasoline mixture for optimal ignition of the fuel. The sensor constantly reports data to the car's computer about the amount of oxygen supplied. A faulty mass air flow sensor increases fuel consumption, increases CO2 levels in exhaust gas, and also reduces engine power and smoothness. Also, if the sensor is faulty, poor acceleration dynamics are observed. In cold weather, a car with faulty sensor doesn't start well.
What are the reasons for the failure of the mass air flow sensor: Most sensor failures occur due to incorrect installation air filter when it is scheduled to be replaced. Also if not changed regularly air filter as required by the regulations Maintenance vehicle, the mass air flow sensor recommended by the manufacturer may fail.
What to do: Theoretically, you can drive for a long time with a broken mass air flow sensor (several weeks or months). But you will notice that the longer you drive, the more your fuel consumption increases. Replacing the sensor in a car service is not that expensive, since the work itself does not take much time and is quite simple. The main costs are related to the cost of the sensor, which for some car models can be 11,000-14,000 rubles if it is an original sensor or up to 6,000 rubles if it is an analogue substitute. Self-replacement sensor is very simple. But due to low cost You can entrust this work to a mechanic at a car service center when replacing the sensor. Remember that you need to regularly change the air filter, observing the vehicle maintenance regulations!
5. Replacement of spark plugs and high-voltage wires
Spark plugs in a car are the main ignition parts fuel mixture. If the spark plugs are faulty, the spark will not be supplied correctly to ignite the gasoline mixture. Faulty spark plugs often have a lack of spark or an incorrect spark interval, which affects malfunction engine. If the spark plugs do not work properly during acceleration, especially from a standstill, you may feel slight jolts.
What are the reasons for spark plug failure: Most spark plugs in vehicles built before 1996 need to be replaced every 25,000-30,000 kilometers. In newer cars, spark plugs last more than 150,000 km. However, these terms planned replacement Spark plug performance may be reduced due to various factors related to fuel quality and driving style.
What to do: If your spark plugs have not been changed for a long time, or you feel failures in the engine operation associated with ignition, then you must immediately replace them with new ones without delay. Don't try to save on untimely replacement spark plugs, since the cost of spark plugs is not very expensive, as well as the work of replacing them. By replacing old spark plugs, you will improve engine performance and reduce your vehicle's fuel consumption. Changing spark plugs yourself is quite easy. Basically, they are easily accessible under the hood of the car. You need an ordinary spark plug wrench to remove the spark plugs from the engine. It is also advisable to monitor the condition high voltage wires, since over time they can become unusable and allow electricity to pass through to the spark plugs, which will reduce the strength of the spark. remember, that regular replacement candles, in accordance with the maintenance regulations of your car, protects your exhaust gas catalyst from breakdowns, and also improves engine performance!
Many people ask what to do if the panel check engine light came on? Most drivers have at least once heard of such a thing as a “check” or Check Engine . But some people encounter it literally every day, while others, perhaps, have never seen it.
Check Engine or "check" literally translated, it means “Check Engine.” It's just warning light OBD-2 system installed on the dashboard of most modern cars. It looks different, but most often in the form of a symbolic image of a yellow engine.
This lamp is connected to electronic unit control unit (ECU) of the engine, and lights up when information about any error or malfunction appears in the ECU. If the car is in good working order, the lamp "Check Engine" should light up when the ignition is turned on, but go out after the engine starts. If, after starting the engine, the lamp blinks or is constantly on, then there is some kind of malfunction. Moreover, in modern cars "Check Engine" can turn on not only if there is a malfunction of the engine systems, but also of the automatic transmission control systems, electronic systems security, etc.
What to do if the check light comes on when starting the engine?
For starters, don't panic. In most cases "check" lights up due to non-critical problems, for example, due to refueling low-quality fuel or single misfires in one of the engine cylinders.
But you shouldn’t relax either.
To begin, stop the car and turn off the engine. Open the hood and check the engine oil level. Visually inspect the integrity of all systems and elements under the hood, check for breaks in the wires going to the engine sensors. If the fault cannot be found, disconnect the battery from the vehicle's network for 10 minutes.
Then turn it on and try to start the car. If Check Engine is still on, you need to get to the nearest service station, where you can scan the ECU for errors and see what is the reason for the lamp to light up.
Don’t follow the example of people who walk around with a burning lamp for months "Check Engine", according to the principle “it’s fine.” Yes, in most cases, even with the lamp on, the car remains on the move, but at the same time its systems operate in backup mode.
IN best case scenario, this will lead to increased fuel consumption, decreased power, etc. IN worst case, will lead to repairs. For example, if the lamp "Check Engine" burns due to misfire faulty spark plug, then soon, if the ECU does not turn off the fuel supply to this cylinder, this may lead to unburned gasoline and its vapors damaging the catalyst, which will lead to expensive repairs.
Therefore, if you check light came on, do not delay diagnostics. It costs on average 500-1000 rubles.
In addition, inexpensive USB and Bluetooth adapters, with the help of which you can easily carry out such diagnostics yourself.
CHECKING THE OPERATION OF LIGHT LAMPS
ALARMS AND INDICATORS
Close all car doors, turn on the parking brake
moz, fasten your seat belts and press the switch
Turn the ignition switch to the ON position without starting the engine. At
the following indicator lights should light up:
ry and indicators:
The following indicators and warning lights should light up
for a short time and then go off:
If any indicator does not turn on, it may
indicate a lamp burnout or an electrical break
chains. Contact a service station immediately
official dealer DATSUN for checking and, if necessary,
inspection, system repair.
On the vehicle information display located
between the speedometer and tachometer, may appear while
knowledge of some indicators and warnings. (See “In-
Vehicle Formation Display” later in this chapter).
LIGHT SIGNALS
Also see "Vehicle Information Display" below in
this chapter.
Malfunction indicator
(orange)
When turning the ignition switch to the ON position
signaling device
turns on. This means that the system is used
If the orange malfunction indicator comes on and
lights up constantly when the engine is running, this may
indicate a malfunction of the engine management system.
This, however, does not mean that it is necessary to immediately
turn off the engine. The engine management system will
function in emergency mode, and engine operation
will be little different from normal.
Contact an authorized dealer's service station
DATSUN for checking and repairing engine systems. You can-
You can get to the service station under your own power without having to
running to tow the car.
ATTENTION
Prolonged operation of a vehicle with burning fuel
indicator of engine malfunction and delay
inspection and necessary repairs will inevitably lead
to deterioration of the traction and dynamic properties of the car,
increased fuel consumption and system failure
engine control. At the same time, the car warranty
may be cancelled.
Violation of engine control system adjustments
may lead to excess acceptable standards toxic
exhaust gas emissions established by local or
state standards.
Pressure indicator lamp
motor oil
Engine oil pressure warning light 4 lights up
after turning the ignition switch to the ON position and
lights up until the engine starts. Turning on the warning lamp
and intermittent sound alarm in any other situation
ations may indicate insufficient pressure in system
engine lubrication.
DANGER
If warning lamp engine oil pressure
occurs while the engine is running, stop immediately
automobile. Stop the engine and contact service
station of the official DATSUN dealer for diagnostics
ki malfunction. Remember that insufficient pressure in
the engine lubrication system will lead to engine failure.
Malfunction indicator
anti-lock braking system(ABS)
Whitefish-
anti-lock brake fault analyzer
The system lights up and goes out after about 3 seconds.
This means that the anti-lock braking system
OK.
If the anti-block malfunction indicator light is
leveling brake system does not go out when running
engine or lights up while driving, this may
indicate a malfunction of the anti-lock brake
system and the need to check it. Contact ser-
hanging station from an authorized DATSUN dealer to check
ki and system repair.
If a malfunction occurs in the anti-lock braking system,
system it turns off. Service brake system at
this continues to work, but the anti-lock braking system
the system will not function (see “Brake system”
in chapter “5. Starting the engine and starting to move").
Low temperature indicator
engine coolant
When turning the ignition switch to the ON position
low coolant temperature indicator
engine light flashes red for a few seconds. This
done to check the serviceability of the indicator. If indie
The engine does not light up when the ignition switch is turned on
to the ON position or turns on during operation
vehicle, this may indicate the need for diagnostic
sticks electrical circuit. If the coolant temperature
liquid exceeds 115 °C, the indicator will be constantly moving
flash red and switch on briefly intermittently
flock sound alarm.
Instrument panel and controls
ATTENTION
Do not allow the engine to operate in an overheated state.
Operating a vehicle with an overheated engine
prohibited. The car needs to be taken to a service station
an authorized DATSUN dealer station for inspection and
eliminating the cause of engine overheating.
Malfunction indicator
brake system (red)
When the ignition switch is turned to the ON position, this
brake system fault indicator
lights up for a few seconds. If this alarm
turns on at any other time, this may be a sign
malfunction of the car's brake system. If I turn on
The brake system fault warning light comes on,
stop the car immediately and contact a service center
station from an authorized DATSUN dealer.
Flashing indicator indicates that it is on
parking brake. Constant flashing of the indicator
points to low level brake fluid in the tank
main brake cylinder or a malfunction of the anti-
locking system/dynamic distribution system
divisions braking force(in this case it lights up
together with the ABS warning light (for some variants
performance of the car)).
DANGER
If the warning light comes on while driving, the
the brain system may be faulty. Continuation
vehicle movement may be dangerous.
If you find that the brake system is working properly, then
you should drive at low speed to the nearest
service station for repairs. Against-
In any case, call a tow truck, because
Driving the vehicle is dangerous.
Operating a vehicle with the warning light constantly flashing
the brake system malfunction analyzer prohibits
puppy Contact an authorized service station
DATSUN dealer.
Discharge indicator
battery
Low battery indicator
sunbathing-
when turning the ignition switch to the ON position.
After starting the engine, the battery discharge indicator
the battery power goes out. This indicates the serviceability of the system
We are charging the battery.
If the low battery indicator does not
goes out when the engine is running or lights up during
movement and at the same time an intermittent sound signal sounds
lization, this may indicate a system malfunction
charging the battery and the need for its maintenance
verki.
If the battery discharge indicator goes off,
got stuck while driving, you should stop at the first
opportunities, observing road safety rules
movements. Stop the engine and check the condition
generator drive belt. If the alternator drive belt
has insufficient tension, is damaged or missing,
The battery charging system requires repair.
If the alternator drive belt is in good condition
condition, but the battery discharge indicator is
The light remains on, the charging system should be checked
at a service station of an authorized DATSUN dealer.
ATTENTION
It is prohibited to continue driving the vehicle if the belt
the generator drive has insufficient tension, or
if this belt is damaged or missing.
Alarm (for some
car options)
system analyzer dynamic stabilization(ESP)
lights up and then goes out after about 2 seconds
performing self-diagnosis ABS systems and ESP. It means,
that the ESP system is working properly.
If the alarm ESP systems caught fire while driving
vehicle, this means that the dynamic function has been activated.
mic stabilization or anti-skid function.
The ESP OFF indicator flashes orange if
dynamic stabilization function or anti-
skid function, and goes out when these functions are turned on.
DANGER
In all other cases, turning on this alarm is
tora indicates a malfunction that can be eliminated
Only at a service station of an authorized DATSUN dealer.
Door open indicator
Door open indicator
always lights up when the door
driver's door is not closed. In the Design version, this indicator
The tor turns on whenever the door is open.
Low balance alarm
fuel
Low fuel indicator
turns on when
need to fill the car with fuel in order to move
The engine did not stall while driving. Low alarm
fuel remaining is switched on if the level indicator shows
The fuel burns in two or fewer segments. Turning on the alarm
jam is accompanied by the inclusion of intermittent sound
alarms Simultaneous flashing of the indicator and
segments of the fuel level indicator indicates non-
serviceability of the electrical circuit of the fuel level sensor.
Instrument panel and controls
Alarm low pressure
air in tires (for some
Your vehicle is equipped with a pressure monitoring system
tire air pressure (TPMS), which monitors tire pressure
spirit in each tire, with the exception of the spare tire
forests.
Low tire pressure warning light
warns of low tire pressure or accident
correctness of the TPMS system.
When the tire pressure drops, the warning light flashes
orange light.
Malfunction indicator
electric amplifier helmsman
management
DANGER
If the engine does not work or stalls while driving,
vehicle, the power steering is not
works. To turn the steering wheel you will need
more effort.
If the alarm is turned on while the engine is running,
tor of power steering malfunction, then
the amplifier does not function. You can continue
drive a car, but it will be more difficult to do so.
Contact an authorized dealer's service station.
DATSUN to check the power steering system.
Power steering fault indicator
nia
turns on when the ignition switch is turned on
to the ON position. After starting the engine, the indicator
power steering fault goes out. This
means that the power steering is working properly.
If this indicator lights up when the engine is running,
gate, this may indicate a malfunction in the system
me power steering that requires checking and
repair. Contact an authorized service station
DATSUN dealer to check the electric steering system
left amplifier.
Seat belt warning
security (for some
vehicle options)
Seat belt warning light
reminds you to fasten your seat belt
security. The warning light comes on every time
yes the ignition switch is moved to the ON position
or START, and remains illuminated until the belt
driver safety and/or front passenger remains-
not wearing a seat belt. If the vehicle speed exceeds
10 km/h, the warning light is switched on,
no intermittent sound alarm. At car speed
car up to 10 km/h inclusive sound alarm
turns off after 60 seconds of continuous movement.
DANGER
Before you start driving, buckle up and make sure that
your passengers are buckled up.
Box fault indicator
gears (for some options
vehicle performance)
When turning the ignition switch to the ON position,
transmission fault indicator
lights up on
few seconds. If the indicator does not turn on when installed,
turning the ignition switch to the ON position, this may
indicate a transmission malfunction. In that
case, you should contact the
service station of an authorized DATSUN dealer.
ATTENTION
In all other cases, the blinking of the indicator is faulty -
Transmission trouble indicates a malfunction that
needs to be eliminated. Contact a service station
official DATSUN dealer.
Airbag indicator
(for some options
vehicle performance)
When turning the ignition switch to the ON position
front passenger airbag status indicator
fat
lights up for a few seconds. If the indicator
did not turn on when setting the ignition switch to position
ON position, this may indicate a malfunction
airbag systems. In this case, you should
contact a service station as soon as possible
official DATSUN dealer.
DANGER
In all other cases, turning on this indicator
ra indicates a malfunction that can be eliminated
but only at a service station of an official dealer
DATSUN.
INDICATOR LIGHTS
Security system indicator
Security system (immobilizer) alarm
flashes orange when the ignition switch is turned on
is in the LOCK, OFF or ACC position and indicates
immobilizer state and security system operating mode
we are a car.
For getting additional information see "Security
system" later in this chapter.
Instrument panel and controls
Turn Signal Indicators
and flash along with
direction indicators. For more information
formations see " Central switch headlights and
Turn Signals" later in this chapter.
(for some versions
car)
Overdrive prohibition indicator
points to
that the automatic transmission will not shift
start on overdrive(see section "Driving a car"
car with automatic transmission transmissions"). Indicator
flashes orange.
High beam indicator
headlights
Indicator
lights up when turned on high beam headlights, and
When the headlights are switched to low beam, the indicator goes out.
Rear power indicator
fog lamp
Indicator
lights up when the rear anti-fog is turned on
manna lantern (see “Switch fog lights»
later in this chapter).
Low beam indicator
headlights
The headlight low beam indicator lights up when
turning the switch to position:
Turn on
headlights, and front and rear marker lights, flashlight
lighting registration plate and panel lighting
devices remain switched on.
Power indicator
fog lights (for
some versions
car)
Indicator
lights up when the fog lights are turned on
headlights (see "Fog light switch" later in this
chapter).
Hazard warning light indicator
red light intermittently when pressed
hazard warning light switch.
DIGITAL DISPLAY
The digital display has several lines:
The top line displays the current time, or
Shift lever position indicator (for
some car versions).
The middle line displays the total or daily
On the bottom line (for some versions
vehicle) is displayed outside temperature or
other trip computer data.
The graphic display shows the current fuel level
va. If refueling is required, the warning light will turn on.
low fuel remaining and audible alarm.
DANGER
Manipulating the information display during
movements may cause an accident in which you
you can get serious damage or died-
no. Be sure to stop the car in a safe place
location before operating the display.
When driving, look at the display only when necessary.
visibility and do not hold your gaze on it for long.
Keep your eyes on the road. Inattentive driving can
cause an accident in which you could be injured
serious injury or death.
TRIP METERS
Trip odometers displayed on digital
display information display car.
Pressing the reset button on the dashboard resets the
odometer readings.
INFORMATION DISPLAY
CAR
