Diagnostic Aids

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The Crankshaft Position Sensor B parameter on the scan tool is normally zero counts. Only when the PCM has determined the CKP sensor A signal to be missing or unreliable, does the scan tool display a rolling count on for CKP sensor B.
An intermittent malfunction may be caused by a fault in the CKP sensor circuit. Inspect the wiring harness and the components for an intermittent condition. Refer to Intermittent Conditions .

If the DTC P0386 cannot be duplicated, the information included in the Freeze Frame data can be useful in determining the vehicle operating conditions when the DTC was first set.