Turbocharger Turbine Inlet Valve Position Sensor Circuit Low

Where it lives

For P22D6, the circuit described runs through the sensor. The description of P22D6 reports a fault at the sensor.

Check these first

• The turbine inlet valve position signal wire shorted to ground
• A failed turbine inlet valve position sensor
• Corrosion at the position sensor connector
• An open reference voltage feed to the position sensor
• Low battery voltage dropping the sensor signal

What to do next

1. Test the position signal wire for a short to ground
2. Measure reference voltage at the position sensor
3. Inspect the position sensor connector for corrosion
4. Watch turbine inlet valve position live data
5. Replace the position sensor if the signal stays low
6. Clear the code and retest

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