Diagnostic Aids
WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
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.
- 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.