Conditions for Running the DTC: P0502

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0117, P0118, P0119, P0128, P0335, P0336, P0338 or P0501 are not set.
The diesel fuel cut-off (DFCO) is active.
The engine coolant temperature is more than 40°C (104°F).
The engine speed is 1,440-3,520 RPM.