Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, and 2002 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
- The hertz and millisecond parameters react immediately to any change in the FCS circuits, but may not react long enough to set this DTC.
- A reading of 16 Hz in the Freeze Frame/Failure Records indicates a circuit failure.
- An intermittent condition may not be detected because the sensor does not immediately power down and the connection may be restored before voltage drops below the operating threshold.
- If this DTC will not reset and the parameters are steady, thoroughly inspect all FCS circuits for an intermittent open.
- If a intermittent condition is suspected refer to INTERMITTENT CONDITIONS .