Diagnostic Aids

WARNING: This page is about a different car, the 2003 Pontiac Grand Am, 2003 Oldsmobile Alero, 2003 Chevrolet Monte Carlo, and 2003 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.

An intermittent fault in the CKP circuits may cause the PCM to resync the cam and may set DTC P0341. If the PCM is resyncing the camshaft, the CMP RESYNC COUNTER on the Scan tool will increment with the engine running.
An intermittent short to voltage on the CMP can set this DTC. A direct short to voltage on the CMP signal circuit will set P0340, as there will be no change in the CMP signal input.
Electromagnetic Interference (EMI) may also set DTC P0341. Inspect the wiring harness for damage. If the harness appears to be okay, observe the CMP resync counter on the scan tool while moving connectors and wiring harnesses related to the CMP sensor. If the CMP resync counter still does not count, while observing the scan tool, operate any non-engine related electrical components on the vehicle. A change in display will indicate the location of the malfunction.

If this DTC is determined to be intermittent, go to INTERMITTENTS in TROUBLE SHOOTING - NO CODES - 3.4L ALERO, GRAND AM, IMPALA & MONTE CARLO article.