Diagnostic Aids

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

If the condition is intermittent. Refer to Testing for Intermittent Conditions and Poor Connections and Inducing Intermittent Fault Conditions .
A MAP sensor that is stuck at BARO, or is skewed 40 kPa lower than desired while under boost will cause this DTC to set.
If the vehicle passes the Circuit/System Verification Test, operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records list.