Golfer Posted March 23, 2012 Report Share Posted March 23, 2012 Hi guys, I have a question regarding the camchaft position sensor on my 2003 STS. I had the engine light come on, and after calling the codes I got a pcm code P0340. I cleared the codes and the engine light went off for a while and came back on again. The engine runs fine without any misfires or rough idle. My question is, how come the engine runs OK with the camshaft position sensor sending out the p0340. I thought its job was to time the spark and fuel injection. Ron Link to comment Share on other sites More sharing options...
Ranger Posted March 24, 2012 Report Share Posted March 24, 2012 A failed CMP sensor should exhibit one or more of the following symptoms. Hard starting or no start Rough running / misfiring Loss of engine power Maybe it was just a momentary failure. Was it a current or history code? Link to comment Share on other sites More sharing options...
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