P238F: Water in Fuel Condition Sensor B
Standardized SAE J2012 code · P23xx — Ignition system and misfire
What does P238F mean?
Sensor B reports water in the fuel filter housing - drain the water trap immediately. Continued operation may cause damage to the high-pressure pump and injectors.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Water has collected in the filter trap
Likelihood is a general estimate across vehicles; your make and model may differ.
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