P2264 — 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.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Water in fuel sensor
- Fuel filter housing
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Defective water-in-fuel sensor
- Wiring or connector fault
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
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.