Turbocharger/Supercharger Inlet Pressure Sensor A Circuit Intermittent/Erratic

Where it lives

For P012E, the circuit described runs through the sensor. The description of P012E reports a fault at the sensor.

Check these first

• Inlet pressure sensor A signal dropping out intermittently
• A chafed or loose wire at sensor A
• Oil or water in the sensor A connector
• A sensor A element that drifts with boost and heat
• A sticking wastegate or boost solenoid feeding sensor A a jumpy reading

What to do next

1. Watch inlet pressure sensor A live data for dropouts
2. Wiggle test the sensor A harness and connector
3. Inspect the sensor A connector for oil or water
4. Check the wastegate and boost solenoid for sticking
5. Replace inlet pressure sensor A if the signal stays erratic
6. Clear the code and retest

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