Conditions for Setting the DTC
WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- With the engine OFF the ECM detects that the differential pressure is greater than or less than the calibrated threshold for 0.5 second.
- With the engine running the ECM detects that the differential pressure is greater than or less than the calibrated threshold for 1 second.