Camshaft Position Sensor: Description and Operation

The Camshaft Position (CMP) sensor is used to indicate the camshaft position so the Powertrain Control Module (PCM) can determine which cylinder is misfiring when misfire is present. Whenever the PCM receives an intermittent signal from the CMP, then the CMP Resync Counter will increment. In order to set a Diagnostic Trouble Code (DTC), the PCM must see a minimum number of resyncs within a maximum number of resyncs within a maximum time.

Refer to System Diagnosis / Diagnostic Tables for testing information. Testing and Inspection