Water in Fuel Sensor B Circuit Low

Where it lives

For P238C, the circuit described runs through the sensor. The description of P238C reports a fault at the sensor.

Check these first

• A short to ground on the water in fuel sensor B signal wire
• An open in the water in fuel sensor B ground circuit
• A failed water in fuel sensor B
• Water sitting at the sensor B probe

What to do next

1. Read water in fuel sensor B voltage on a scan tool
2. Test the water in fuel sensor B signal wire for a short to ground
3. Drain the fuel filter bowl and recheck
4. Replace water in fuel sensor B if the circuit tests good
5. Clear the code and retest

Look up another code