Conditions for Running the DTC

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0237 is not set.
The engine speed is between 500-2,700 RPM.
The total fuel quantity burned is more than 2,000 mm³ .
The engine coolant temperature (ECT) is more than 72° C (158° F).