Join Date: May 2006
Location: Monterey Park, CA
CEL came on. Help!
My car threw a CEL yesterday. I just scanned the code with Actron OBDII Scanner, and I got the codes P0340 and P0341. (2005 Cobalt 2.2L)
(According to the Chilton's Cobalt Manual)
P0340-"CMP" signal problem from ignition module, 2005 and 2006 2.2L models
P0341-"CMP" signal problem from ignition module, 2005 and 2006 2.2L models
Don't know why they are both the same thing. However, I've tried looking for the camshaft position sensor on the car as stated in the book, but can't find it. So I don't know if its loose, the PCM had a fluke, or bad wiring. Car seems to run fine, but has trouble starting up sometimes. I did recently put in some pulstars to see if they do what they really do, and the CEL came on after 40 miles of driving. Although I have had the start issue before putting these in. I plan on putting the original spark plugs later, to see if that's the problem. Any feedback on this issue would be greatly appreciated, thank you!