Water in Fuel Sensor Circuit
The ECU detects an electrical fault in the diesel water-in-fuel sensor circuit. Until repaired, water contamination in the fuel filter cannot be detected, risking damage to the high-pressure pump and injectors.
Affected components
- Water in fuel sensor
- Fuel filter housing
Common causes
- High likelihood: Defective water-in-fuel sensor
- Medium likelihood: Wiring or connector fault
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.