DTC codes / P23xx · Ignition system and misfire / P238E
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.
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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