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Check Engine Light
The check engine light comes on in a car when the engine is experiencing a problem. Ask questions here about your car's check engine light.
7,238 Questions
Why is your 2004 ford expedition check engine light blinking?
Engine misfire. Possibly a bad coil or spark plug.
Blinking check engine light on 2002 mercury sable?
If your check engine light is blinking that means an engine cylinder misfire has been
detected - have the vehicle scanned for any trouble code(s) to help diagnose and then
repair the problem
How Long can you drive with the check Engine Light on with Hyundai Accent?
Read your owners manual!
If it's red stop as soon as possible, and get someone to assess the problem. Read the code etc.
If it's yellow the problem will likely just degrade the car's performance, and it won't pass inspection if that's a concern. Get the problem assessed as soon as you can, becase it will get worse.
How to check code when check engine light comes on?
With scan tool, go to Autozone and they will do it for free.
Check engine light 95 Lincoln town car?
If the check engine light is on for a 95 Lincoln town car, check the computer codes. a problem could cause low fuel economy, or cause a part failure over time.
How do you fix a P0420 bank 1 on a 04 dodge stratus?
How do you fix a p0420 bank 1 on a 05 dodge stratus
What does a flashing check engine light on a 2000 sebring mean?
The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
A flashing light is an indication of a misfire.
See related questions below for more info.
P0700 : EATX code present. It just means that the transmission computer has a code in it. You need to have the TCM checked for codes also.
You then fix the trans code and reset the light with a scan tool.
P0700 is EATX code present. It simply means that the engine computer has noticed that the transmission computer has a dtc in it. This causes the Pcm (engine computer) to turn the check engine light on. You will need to have the TCM (trans computer) checked for codes to know what to diagnose. transmission control system (MIL Request) generic on board diagnostic code
P0700 : EATX code present. It just means that the transmission computer has a code in it. You need to have the TCM checked for codes also.
If your engine light is blinking would replacing the spark plugs help the problem?
The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to a parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
Typically, when the light flashes, its telling you that the engine is in a condition that could cause a catastrophic failure of the catalytic converter. It could be a spark plug but could also be a coil or even more bizarre problems. When the computer detects a condition/miss like this, it shuts down the injector that belongs to the cylinder that's misfiring. I've had a Ford Taurus throw miss codes after replacing plugs and coils. Turned out it was the alternator going bad and probably flooding the system with AC voltage.
Why is your engine light still on even after you have changed everything the code said it needed?
Give us the year, make, model and engine along with the codes you're getting and what parts you have changed and maybe we can help you. Some codes are the result from other problems.
How do you reset check engine lamp for Isuzu wizzard 1998 4JX1?
Disconnect the negative battery cable from the battery and wait a few minutes then reconnect the cable. But, if the problem that caused the light to come on hasn't been fixed the light will come back on.
Will check engine code P0305 disappear after problem is corrected?
Most codes will self clear after the cause is repaired. It may take quite a while for the computer to run the proper self test enough time to have that happen.
What does it mean when the check engine light and vsc off light stays on 2001 Lexus ls430?
It means you need to have a code reader connected and pull codes to determine the issue.
What causes the check engine light to blink on and off and then stop blink and turn off?
It is indicating that there is a fault with the engine of the car. You need to take it to a garage for repair/service.
USUALLY A PROBLEM IN TEH EMISSION CONTROL SYSTEM - HAE VEHICLE SCANNED TO DETERMINE THE PROBLEM take the negative side of battery terminal off for 15 to 20 sec. then put back on take battery terminal off neg side for about 20 sec then replace
Why did the check engine light come on after washing the car?
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
What does it mean when the service engine soon light flashes or stays on on land rover discovery2?
A fault has been detected in the system. It may be an intermittent thing, one time thing or something that needs attention, but if the vehicle is still running fine then have it looked at, at your soonest convenience. You can unhook the pos and neg battery terminals for 5-10 minutes thus resetting the system. If the light comes back on after the vehicle relearns it's settings etc (can take a day or a few weeks depending on the hot/cold startups driving speeds etc) , then it needs attention. If it doesn't come back on, then it may have been an intermittent thing or one time occurrence which effectively will have been cured by you resetting the system.
One expensive lesson I was taught after taking it in to be looked at is the obvious with many cars now days. If the gas cap is not completely closed (or it is not sealing completely when you screw it back it) will cause the Check/Service Engine light to come on.
**this is just a cautionary note. i have learned that a blinking service engine soon light means that the problem is worse than if the light were just steady and one should not drive the truck.
What does the check engine light look like?
Depends on the car, but in most cases it is a little light in the shape of an engine block.
How to Reset check engine light in Jeep Wrangler?
After fixing the cause of the trouble code, you clear code with a scan tool.
You have a faulty ground to one of the tail light bulbs and there is a reverse current flow back through the brake light circuit. It could be either front or rear turn signal light.
How do you reset the imobilizer on a Daewoo Nubira?
IS THIS A BUTTON ON LEFT SIDE OF DRIVER SEAT COVER WITH SOFT BALCK RUBBER? IF SO, REMOVE BODY TRIM ON SIDE AND AROUND BUTTON AND MANUALLY LIFT BUTTON TO RESET. IT COST ME $90.00 TO LEARN THIS LESSON.
Why does cylinder 4 always misfire on a 1998 F150?
Need more information (such as engine size) to tell you why. Experience is anyone of them can misfire but Fords of that vintage sometimes have problems with cooling leaks on that hole from heater hose I had exact same problem on my '99. Leak on #4 plug caused damage to the coil. Changed hose and coil. Coil very easy to replace. My brothers 98 F150 had the same problem, had to change the intake gaskets. All four corners of the intake was leaking. Took about 4 hours to repair. His was a 4.6 motor.
