DTC P0628 Cadillac
Fuel Pump Control Circuit Low Input
Fuel Pump Control Circuit Low Input
Description
Engine started, engine speed over 40 rpm, system voltage from 8-18v, and the PCM detected an unexpected low voltage on the Fuel Pump control circuit for 1 second. The ECM provides system voltage to the coil side of the fuel pump relay. When the ignition s
Cause and Solution
Fuel pump relay connector is damaged or shorted
Fuel pump relay control circuit is shorted to ground
Fuel pump relay is damaged or it has failed
Video Guide
Diagnostic Info
- DTC Code: P0628
- Brand: Cadillac