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Check engine light is on and I need to reset the computer. How do I reset it?

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Reseting the codes on your car will clear flags that your car has to complete again and until it does shifting may be hard or sloppy you may increase your fuel mileage as the computer has to learn all over how you drive. And if you need help and you go to someone who does have a scanner you will have lost some soft codes that standard OBDII scanners will not pick up making you spen money for troubleshooting that they can't find or make it much harder to find. Also some states it's against the laww to clear codes due to emmison laws and can be fined up to $10.000 per incidence. Ant the auto parts store will scan your computer but WILL not clear codes becasue they can be held liable.

Posted on Oct 17, 2009

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Sadly, you cannot reset the car's computer by yourself unless you have a certain hand-held computer. Fortunately, every auto parts store has one and will clear the codes for you for free. They will plug it into your OBD input and configure some settings, restarting your car's computer, clearing the codes.

Posted on Oct 06, 2009

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Hello Sir, First I will recommend that not to go for reset. Resetting is easy but it will cause further problems. Check Engine Light on this car usually means that the fault is in the Emission Controls. Also this can be caused if there persists a fault in the O2 Sensor or in the Catalytic Converter. But nothing I can suggest until you give us the Fault Code. CEL ( Check Engine Light ) doesn't come on on its own, it is accompanied with a Fault Code which gets encoded into the Computer. Try Scanning the Computer with a OBD2 Scanner and retrieve the Fault Code. Then we can diagnose the Problem and give appropriate solution.
Kindly get it scanned and reply us.
But on your point, to reset CEL, you need to unplug the Battery and keep it unplugged for 5 Min and get it plugged. This will completely reset the Code in the Computer.
NOTE:-------------- Don't try to reset it. Only reset it if you are sure that the Computer doesn't have any Fault Codes. If you reset it without getting the Code, the Code will be erased and will never be retrieved for Diagnosis. This will make repairing impossible.
Thank you Sir, Have a nice day.

Posted on Oct 06, 2009

  • Charles H Sherwood Sep 15, 2013

    the fault code is po446 I have changed the selanoid I also have a good current just need to reset the service engine light

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