Diagnostic Aids
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.
- Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking Aftermarket Accessories .
- A MAP sensor that is skewed or bias may cause this DTC to set.
- A restricted oil supply feed to the turbocharger may cause this DTC to set. Refer to Turbocharger Lack of Oil Supply .