Pontiac Problems? Ask a Mechanic for Answers ASAP
Hello and thank you for your question,The check engine light comes on when the PCM (computer) sees a system fault and when this happens the computer will set and store a fault code and or codes. The problem may be due to the moisture . What you need to do first is remove the negative battery cable which will clear the fault and turn the light off. If the light came on due to a false code then the problem is resolved. If the light returns after you have driven the car then you will need to have a scan done and the fault code retrieved. Most auto parts stores such as Auto Zone will do the scan for you at no charge. Try clearing the code first and if the light dose not return then its no longer an issue.
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