Intake Manifold Tuning (IMT) Valve Position Sensor/Switch Circuit Intermittent Bank 1

Where it lives

For P2079, the circuit described runs through the sensor. The description of P2079 puts it on bank 1.

Check these first

• A loose bank 1 IMT valve position sensor connector
• Intermittent chafing on the position sensor harness
• A failing position sensor that drops signal at times
• A bank 1 IMT valve linkage that binds and releases

What to do next

1. Read the bank 1 IMT valve position sensor while wiggling the harness
2. Inspect the position sensor connector for loose or corroded pins
3. Test the position sensor circuit for intermittent opens
4. Check the bank 1 IMT valve linkage for binding
5. Replace the bank 1 IMT valve position sensor if the fault repeats
6. Clear the code and retest

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