Turbocharger Outlet Pressure Sensor B Circuit

Where it lives

For P01FA, the circuit described runs through the sensor. The description of P01FA reports a fault at the sensor.

Check these first

• A failed turbocharger outlet pressure sensor B
• An open or short in the sensor B wiring
• A corroded sensor B connector
• A boost leak at the turbocharger outlet
• A faulty ECM input for sensor B

What to do next

1. Read turbocharger outlet pressure sensor B on a scan tool
2. Inspect the sensor B connector and wiring
3. Check the turbocharger outlet plumbing for leaks
4. Test the sensor B signal circuit
5. Replace turbocharger outlet pressure sensor B if out of range
6. Clear the code and retest

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