DTC U040F Ford
Low Speed Radiator Fan Relay Circuit Malfunction
Low Speed Radiator Fan Relay Circuit Malfunction
Description
Key on or engine running; system voltage over 10.5v, and the PCM detected an unexpected voltage condition on the Low Speed Radiator Fan Relay control circuit during the CCM test.
Cause and Solution
LFAN radiator relay control circuit is open or shorted to groundLFAN radiator relay power circuit is open (test power to IGN)LFAN radiator fan relay is damaged or has failedPCM has failed
Video Guide
Diagnostic Info
- DTC Code: U040F
- Brand: Ford