Fuel Cooler Pump Control Circuit/Open
Open circuit at the fuel cooler pump control. The pump that circulates fuel through a cooler (used on diesels and some hot-fuel applications) cannot be driven.
Affected components
- Fuel cooler pump
- Pump wiring
Common causes
- High likelihood: Wiring break or unplugged connector
- Medium likelihood: Pump motor open
- Low likelihood: Pin pushed back out of connector body
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.