Conditions for Setting the DTC

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

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