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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
What could be wrong if the check engine light stays on when driving a 2003 dodge SX 2.0?
It means the computer has detected a problem with the emissions system. The problem can be many things. Have the computer scanned to recover the fault code. This code will help you to determine where to look. Take your car to AutoZone, they provide a free check of your error code(s) that would be triggering the 'check engine light'. It is free program at its 3,037 stores nationwide. http://autozone.com/servlet/UiBroker?UseCase=ST001&UserAction=displayStoreLocator
no idea whats wrong but mine does the same.... it might be the clutch or the gear box.... took mine to a Volvo dealer.. they fixed something but it still broke down again on the way home... not sure they know what they are doing.. do you have any more info ??
if this is a newer car 1996+ it will be a obdII scanner needed you don't have to warm up the car to pull a code unless you want to see the freeze frames and how the system is switching but yea all you would do is plug in the scanner and turn the key to the run position but do not start
What does the check engine light mean when it comes on for a 2001 passat?
It comes on when the engine computer detects a malfunction and sets a code. You need to have the system checked for codes.
Check engine light with a p0341 code?
Trouble code P0341 means:Camshaft position circuit range/performance
What is a p0440 trouble code and what to do to fix?
P0440 EVAP System No Flow During Purge Possible Causes Setting Conditions
- Charcoal canister is loaded with fuel or moisture
- Fuel filler cap is loose, cross-threaded, damaged or wrong part
- Fuel tank, fuel filler neck or fuel sending unit 'O' ring is leaking
- Fuel tank pressure sensor is damaged, disconnected or it failed
- Fuel tank vapor line(s) is clogged, damaged or disconnected
- Purge valve vapor line is clogged, damaged, or disconnected
- Purge or vent solenoid power circuit is open (check the fuse)
- PCM has failed
DTC�P0107, P0108, P0112, P0113, P0115, P0116-P0118, P0121, P0122, P0123, P0125, P0443, P0449, P0452, P0453, P1106, P1107, P1112, P1114, P1115, P1121 and P1122 not set, engine started, ECT and IAT sensors from 39-86�F and within 16�F at startup, vehicle driven at a steady speed less than 72 mph, system voltage over 10.0v, BARO sensor more than 75�kPa, fuel level from 15-85%, and the PCM detected the EVAP system was unable to achieve and maintain vacuum during the EVAP flow and leak test. Note: An Ultrasonic Leak Detector can be used to help detect a leak.
This code sets in 2 Trip(s).
Your most likely culprits are going to be a loose, damaged gas cap, vent or purge solenoid, evap canister, or fuel pressure sensor. Other than the gas cap, I believe all of these items are dealer only.
What does the red light on the dashboard of my Fiat Seicento mean Its in the shape of a handbrake?
it means your emergency brake, or hand brake is set. if the brake is released, check cables and sensor. could also be the switch or sensor.
This happened to me too. The emissions test broke the diaphragm in the gas cap. Bought a new gas cap and it fixed everything.
Why does the tire sensor fault light come on.?
There is a problem with either the pressure in a tire, or a sensor itself has a problem. You will need to take your vehicle to a repair shop that can check the tire press system for codes.
Why would the check engine light come on in a 1989 gmc safari van?
My suggestion is to take van to autozone and they will pull the trouble code out of memory for free. Then you can go from there.
The reason it wont start when the lights don't come on is because at that point your eec a.k.a. ecu,pcm or computer isn't coming on. the causes could be ignition switch or eec relay if you can locate the relay that is the most likely cause.
Will bad oxygen sensor cause rough idle?
Not likely but possible. I would suspect a leaking vacuum hose.
Why would the engine light stay on on a 1994 grand marquis when nothing seems to be wrong?
The computer has detected a problem and there is a code available for you to read. That is the purpose of the light.
Your 20000 Honda Accord se check engine light stays on?
A 2000 Honda Accord check engine light will stay on if the ECU is not reset. To reset the light remove the ECU fuse from the engine bay fuse box. Reinsert it after 5 seconds.
What does it mean if your service engine soon light comes on for your Nissan sentra 2004?
It means that the engine computer has detected a malfunction and set a code.
On almost all cars any sensor unplugged can turn on the check engine light.
the check engine light comes on when one or more of about (500 to 1000) computer regulated components either begins to fail, is getting abnormal readings for its purpose thus the check engine light comes on to symbolize that their is a problem. you have to find out what type of problem it is by getting an engine diagnostic, in which they hook up a scan tool pull the trouble code/s and then test components related to the set code to see which are malfunctioning. make no mistake this will cost you about $90 unless you know a diagnostic tech. autozones free check engine light package will not tell you whats wrong it will only pull the code as stated in the above sentences, this does you no good as it does not tell you which part requires replacement. and they will guess do to their inexpertise which if you listen will cost you alot more money than just handling it with a diagnostic. Cylinder misfire(s),the spark plug is firing at the wrong time and that will cause the engine to run rough.
How do you reset 2000 Volvo V70XC check engine light?
Switch the ignition without starting the car to "drive-mode" (number 2) and hold down the trip-button for a few seconds, turn of the ignition and wait for a few seconds and it will be gone.
S class 221 changed the lambda sensor upstream check engine light still comes on?
There is another problem. see related questions.
What is the problem when the emission test give code P1294 for a Dodge Caravan?
P1294, target idle speed not reached.
2007 Mazda6 check engine light?
There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool. After repair light can be shut off with scan tool.
How do you check the service engine light codes for a 1999 Chevy truck?
You will have to get a OBD2 engine scanner and hook it up and then you can read the codes. Advance auto parts will do that for free. I would just call some parts stores in your area and ask them if thay can scan your truck.
1998 Honda Crv check engine light is on what can be the problem car does not get enough power?
If the check engine light is on, that means the computer has set a code, a number, that will need to be read by a diagnostics unit. Some places like Autozone may still do it for free. Once you have the code, you then need to determine what part is setting the code. For example you may have a code for low fuel pressure. It could be the fuel pump, or it could be one fuel injector, it may be all of your injectors, it may be a blocked fuel line so as you can see the problem is usually linked to a series of parts and the way to determine which part is failing is by testing the parts. Some of this can be done without electronic equipment and some cannot. You may have a blocked fuel filter. I suggest you start with a new fuel filter which is a maintenace item anyway if you haven't replaced it, and possibly a new air filter as well. If you engine is starving for air it will run poorly as well. These 2 filters should be maintained regularly. It takes 3 things for an engine to run, fuel, air and spark. Go get your codes read and then determine a path to finding the problem step by step.
How do you turn off the check engine light on a 2001 jetta?
The best way:
Take it to your local retail auto parts store. Most of these stores will plug in their scan tool and tell you what turned on the light.
If it is something that just needs to be reset they can do that also.
If it is something that will just turn the light back on they will tell what the code says, you will have to get the problem fixed so the light will go out.
