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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
How does the car know the EGR valve is bad?
If the egr valve was stuck open, the engine wouldn't idle. If the egr valve was stuck closed you may hear excessive pinging (spark knock) and in most vehicles, the check engine light would illuminate.
Why would the engine light stay on in a 2005 pantiac vibe?
Mine is on because the oxygen sensors are having an issue. Just took it in to be checked goes in next week to be fixed. Also received a recall couple of months ago I took it in for but I doun't remember what part was replaced.
How do you get the service engine light to go off on a 1999 Oldsmobile alero?
Have vehicle scanned to determine the problem and have codes cleared
It sounds like your VSS(Vehicle Speed Sensor) has gone bad, which will turn on your check engine light.
bad ground from either the battery or engine block to the body plus, year make and model would be helpful.
How do you reset a 2004 Honda accord with 100000 mi check engine light?
Have vehicle scanned to determine the problem
How do you reset service engine light in a 2001 gmc savana van?
Turn the ignition key to the on position (do not start the van) and immediately step the gas pedal to the floor 5 X within 5 seconds. Repeat if it does not reset.
to check if reset key off and start van lamp should go out within a few seconds..
D. Peterson
Auto tech 30 years
Master ASE
Why would the service engine light come on occasionally but only when on a freeway exit ramp?
In the similar situation Mazda dealership thought it's the distributor that needs changing.
The check engine light can come on for a variety of reasons including transmission problems. It is best to have the code checked to see why the light is on. Many auto parts stores will check the code for free.
NO LEAVE ME ALNOE leave me alone
the cluster fuse is blown!
Replace it!
if it blows again you have an electrical short somewhere.
What causes the engine not to start when security light is on?
The security is keeping it from starting which is what it is supposed to do.
Why would your overdrive light be blinking and check engine light be on in a 1992 Suzuki sidekick?
the below is faulty;#2 answer 1:
AZ can not scan any suzuki below 1996 period.
only factory scan tools can do that. $4000 tool + but the OD light means the transmission computer has stored error codes. this puter is called a TCM for the 4speed electronic automatic tranny. http://www.kick-fix.com/Blink.html
this car has 3 ways to blink lights. ECU TCM and brake RWAL controller.
each one has a jumper connection and the manuals in stores do not cover them all. my link shows how to do all of them.
The check engine lamp, just jumper the DLC connector diagnostic request pins. it will blink out an error. (the ECU talks to the tranny TCM) and can set the ECU DTC for the tranny too. DTC = diagnostic trouble code. all you need is a paper clip for a tool , nothing else.
answer 2 (old)
A blinking overdrive light and the check engine light on most likely indicate the transmission range sensor (TRS). For detailed info, have the vehicle scanned at a local auto parts store (AutoZone, etc,) that offers free scans. If you want to retrieve the codes yourself, go to your local public library and check out a repair manusl (Haynes or Chilton) for your vehicle. Detailed instructions on how to retrieve the trouble codes and what each code means are in chapter six.
How do reset the service clock on Mercedes vito?
if the vito is upto 2003, you have two butons below the speedometer press the one on the left and switch the ignition on keeping it depressed for ten seconds or until you get a beep . JOB DONE
Check the MAP sensor.
What would keep 2003 TC mini van from starting - light come on but not turning over?
not turning on could be flat battery, bad igniton switch, bad safety switch, bad starter motor,bad stater solenoid
Can the camshaft position cause your vehicle not to fire if code reads malfunction?
Yes, the camshaft position is critical for both compression and ignition reference. That is valve timing. But there is no code to tell you your valve timing is off. There is a Camshaft Position Sensor, check for voltage at the connector, broken wiring or corrosion and then ohm out or replace the sensor. Get e repair manual and learn about your car, you'll save money, I promise...
What would cause your engine light to come on besides your gas cap being loose?
possibly air in the gas tank. this happens sometimes if you keep pumping a little at a time, trying to get to an exact amount. It could also be water in the gas tank. this happens in cold weather sometimes. you can buy a bottle of drygas or something similar at a gas station. it only costs a few bucks and gets the water out. it could also be some kind of debris in the gas tank.
87 Pontanic SubBird turn the key switch and dash lights don't come on and will not turn motor over?
dead battery ???
How do you reset the check engine light on 1993 Subaru Justy?
After repairing the cause of the code, you can clear it with a scan tool.
Can pulling a fuse while jeep running cause a check engine light no bus?
That is a possibility.
That is a possibility.
It can be a myriad of things. Drive the car to a trusted mechanic and have them scan the ECU with an OBD2 scan tool. The tool will retrieve the code that has been set. This code will tell you what parts are being effected and a possible repair.
definately sounds like an electrical problem probably the altenator.
