Conditions for Setting the DTC

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

A faulty pump motor or pump motor relay is detected.
A short to ground or an open/high resistance on the pump motor B+ circuit is detected for 1.8 s.
An open/high resistance on the pump motor ground circuit is detected for 1.8 s.