Engine Coolant Flow Control Valve Position Sensor Circuit Low

Where it lives

For P2B5E, the circuit described runs through the sensor. The description of P2B5E reports a fault at the sensor.

Check these first

• A short to ground in the coolant flow control valve position sensor circuit
• A failed coolant flow control valve position sensor
• Corrosion in the coolant flow control valve position sensor connector
• Lost reference voltage at the position sensor
• Contamination on the coolant flow control valve position sensor

What to do next

1. Check reference voltage and ground at the coolant flow control valve position sensor
2. Inspect the position sensor connector and wiring
3. Test the position sensor signal for shorts to ground
4. Read coolant flow control valve position live data
5. Replace the coolant flow control valve position sensor if the signal stays low
6. Clear the code and retest

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