Conditions for Setting the DTC

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

The EBCM detects a short to ground or an open/high resistance on the B+ circuit.
The EBCM detects an open/high resistance on the ground circuit.
The EBCM detects the pump motor runs continuously.
The EBCM detects the pump motor is binding or stalled.