What does code P2265 mean?

Q: What does code P2265 mean?

Water in Fuel Sensor Circuit Range/Performance. P2265 indicates that the engine control module has detected an out-of-range or erratic signal from the water-in-fuel sensor circuit, which monitors for moisture contamination in the diesel fuel system. The computer expects a stable voltage or resistance value within a specific window, and this code sets when the signal falls outside that range or behaves unpredictably.

DTC codes / P22xx · Fuel and air metering (injector circuits) / P2265

P2265Water in Fuel Sensor Circuit Range/Performance

P2265 indicates that the engine control module has detected an out-of-range or erratic signal from the water-in-fuel sensor circuit, which monitors for moisture contamination in the diesel fuel system. The computer expects a stable voltage or resistance value within a specific window, and this code sets when the signal falls outside that range or behaves unpredictably.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering (injector circuits)

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.