Crankshaft Position Sensor: Description and Operation

The crankshaft position sensor provides the PCM with crankshaft speed and crankshaft position. The PCM utilizes this information to determine it an engine Misfire is present. The PCM monitors the CKP sensor for a momentary drop in crankshaft speed to determine if a misfire is occurring. When the PCM detects a misfire, a DTC P0300 will set.

The PCM also monitors the CKP sensor signal circuit for malfunctions. When the PCM detects a CKP sensor that is out of normal operating range, the PCM will set a DTC P0335 or a DTC P0336.