what causes check light to stay on after car is fixed on a 2003 corolla Le please tell me please?

Asked by Rudolph Jul 11, 2018 at 06:38 PM about the 2003 Toyota Corolla LE

Question type: Maintenance & Repair

i had a new cannister put in than check light went out for a while than went on
again, than had check light go on again and replaced gas cap than check light
went out than now light went back on again i can't figure out what is going on.i
had some diagostic testing done the car did not register at all with computer
idon't know anymore what problem is.

1 Answer
70

Dale answered 5 years ago

The ONLY way to begin to diagnose your vehicle is by using a code scanner to first see what the code is and then to diagnose from there with a predetermined check list. If you were having a code for an evaporative emmission leak, large or small, and the tech was just replacing parts to fix it then that's not how you repair vehicles. That being said you've replace 2 of the most common things which cause a code for that leak. If you live in a state that sees tough winters and uses salt or calcium chloride on the roads in the winter then you may want to have your fuel filler neck, evaporative emission pipes checked for rust holes. I hope this helps

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