Fuel Rail Pressure Sensor Circuit Intermittent/Erratic Bank 2

Where it lives

For P01C2, the circuit described runs through the sensor. The description of P01C2 puts it on bank 2.

Check these first

• A loose fuel rail pressure sensor connector on bank 2
• Chafed wiring on the sensor circuit
• A failing fuel rail pressure sensor
• Air in the bank 2 fuel rail
• A poor ground on the sensor circuit

What to do next

1. Wiggle test the sensor harness on live data
2. Inspect the sensor wiring for chafing
3. Bleed air from the bank 2 fuel rail
4. Replace the fuel rail pressure sensor if the signal jumps
5. Repair the wiring and clean the ground
6. Clear the code and retest

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