Low Pressure Fuel System Sensor Circuit

Where it lives

For P2539, the sensor sits on the circuit this code reports. The description of P2539 reports a fault at the sensor.

Check these first

• An open or short in the low pressure fuel system sensor circuit
• A failed low pressure fuel system sensor
• A backed out pin at the low pressure fuel system sensor connector
• Chafed wiring along the low pressure fuel system sensor harness

What to do next

1. Read the low pressure fuel system sensor on a scan tool
2. Test the low pressure fuel system sensor circuit for open and short faults
3. Check the low pressure fuel system sensor connector pins
4. Verify reference voltage at the low pressure fuel system sensor
5. Replace the low pressure fuel system sensor if faulty
6. Clear the code and retest

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