Diagnostic Aids

The following conditions could also set the DTCs:

• Physical damage to the CKP sensor or the reluctor wheel
• Excessive play or looseness of the CKP sensor or the reluctor wheel
• Improper installation of the CKP sensor or the reluctor wheel
• Foreign material passing between the CKP sensor and the reluctor wheel
• Excessive air gap between the CKP sensor and the reluctor wheel
• The ECM uses the camshaft position sensors to determine engine speed and position when there is a CKP sensor condition.
• The engine will operate with a CKP sensor condition only if the ECM has stored the learned reference position of the camshafts in memory. With a crankshaft position sensor condition the engine will go into a limp home mode after a restart. The ECM then calculates engine speed from one of the camshaft position sensors. During a limp home mode the following additional DTCs may set and should be ignored:
  • DTC P0324 Knock Sensor (KS) Module Performance
  • DTC P1011 Intake Camshaft Position Actuator Park Position Bank 1
• An intermittent condition in the camshaft position (CMP) sensor circuits can cause a CKP DTC to set. Inspect the CMP sensor, harness connections, and related wiring, if you suspect this condition.