My engine light is back on!
This is the same issue I have experienced last year. It occurs only when the outside temperature is below freezing even the engine is warm.
I took this to the dealer #1 who indicated that the coil on cylinder #1 is bad. Replaced it and it did not fix the issue. Swapped the coils and confirmed that it is not a coil issue. Swapped the fuel injectors as well to confirm is not fuel system related.
Drove it fine last summer and fall. Just when it got cold, the light came back on.
I have taken the car to dealer #2 who indicated that the issue is a bad PCM and it will cost over $1,000 to fix. I had problem believe this it is PCM related because it only happens during the winter. If it is truly a PCM electrical issue, then why is it not occurring during the summer?
Could this be related to the mass air flow sensor? Or the throttle position sensor?
have the same problem?
Saturday, November 22nd, 2014 AT 5:53 AM