Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2003 Hummer H2, 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 GMC Sierra, and 2003 GMC Cab & Chassis Sierra. However, it is still accessible from the selected car via links, so may be relevant.
The following conditions may cause this DTC to set:
- Camshaft reluctor wheel damage.
- Sensor contact with the reluctor wheel.
- Foreign material passing between the sensor and the reluctor wheel.
- Excessive camshaft end-play.
- Wiring routed too close to secondary ignition components.
If you find any damage to the reluctor wheel or to the camshaft, see appropriate article in ENGINES.
If the condition is intermittent, see INTERMITTENT CONDITIONS under SELF-DIAGNOSTIC SYSTEM.