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DTC codes / P23xx · Ignition system and misfire / P238E

P238EWater in Fuel Sensor B Circuit Intermittent

P238E indicates that the powertrain control module has detected an intermittent fault in the electrical circuit for Water in Fuel Sensor B, which monitors for water contamination in the fuel system. The computer sees the sensor signal dropping out or behaving erratically rather than reporting a steady water-present or water-absent condition.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaIgnition system and misfire

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

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