What does code P226A mean?

Q: What does code P226A mean?

Water in Fuel Lamp Control Circuit. P226A indicates that the powertrain control module has detected a fault in the electrical circuit that controls the water-in-fuel warning lamp, which is typically part of the fuel filter assembly on diesel vehicles. The computer monitors the lamp circuit for expected voltage or current and sets this code when the circuit is open, shorted, or the lamp fails to respond as commanded.

DTC codes / P22xx · Fuel and air metering (injector circuits) / P226A

P226AWater in Fuel Lamp Control Circuit

P226A indicates that the powertrain control module has detected a fault in the electrical circuit that controls the water-in-fuel warning lamp, which is typically part of the fuel filter assembly on diesel vehicles. The computer monitors the lamp circuit for expected voltage or current and sets this code when the circuit is open, shorted, or the lamp fails to respond as commanded.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

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.