Water in Fuel Sensor B Circuit Range/Performance

Where it lives

For P238B, the part to look at first is the sensor named here.

Check these first

• A water in fuel sensor B reading outside its normal range
• Contaminated fuel or water in the filter bowl
• A worn water in fuel sensor B element
• Added resistance in the sensor B circuit

What to do next

1. Read water in fuel sensor B on a scan tool
2. Drain the fuel filter bowl and check for water
3. Test the water in fuel sensor B circuit
4. Replace the fuel filter and refill with fresh fuel
5. Replace water in fuel sensor B if the circuit tests good
6. Clear the code and retest

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