Conditions for Running the DTC

WARNING: This page is about a different car, the 2008 GMC Yukon XL and 2008 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.

C0110 04

System and ignition voltage is above 10.5 volts.
The system enable relay is ON.
The pump motor has been commanded OFF for 2.5 seconds.

C0110 03 or C0110 61

Ignition ON.
The system enable relay is ON.
The pump motor has been commanded ON, OFF and ON again.