Conditions for Running the DTC
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
P040C
- The engine is running.
- The coolant temperature is less than 150°C (302°F).
- The engine is not in regeneration.
- This DTC runs continuously when the above conditions are met.
P040D
- The engine is running.
- The coolant temperature is more than 150°C (302°F).
- This DTC runs continuously when the above conditions are met.