Malfunction check engine light

30

Asked by Nov 11, 2011 at 07:45 AM about the Volkswagen Jetta

Question type: Maintenance & Repair

I Changed o2 sensors. plugs and wires and air filter: what next to try?

1 Answer

1,655

Try the gas cap. I know that this sounds ridiculous but, a vented cap that is not venting properly or is venting too much ( like removing the cap or installing the wrong cap ) will cause your "Check Engine" light to come on.

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