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P2076 — Intake Manifold Tuning Imt Valve Position Sensorswitch Circuit Rangeperformance Bank 1

Manufacturer-specificPowertrain (engine & transmission)

The P2076 code indicates that the Engine Control Module (ECM) has detected that the Intake Manifold Tuning (IMT) valve position sensor on Bank 1 is reporting a signal outside of the expected range or is not performing as commanded. This system adjusts the length of the intake runners to optimize airflow and torque across different RPM ranges.

Symptoms

What causes it — most likely first

1. Stuck IMT Valve

Carbon buildup or mechanical wear can cause the valve to seize, preventing it from reaching the position commanded by the ECM.

2. Faulty Position Sensor

The sensor may have an internal electrical failure or provide inaccurate voltage readings to the ECM.

3. Broken Linkage

The physical connection, arm, or vacuum line between the actuator and the valve may be disconnected or broken.

4. Wiring Harness Damage

Frayed wires, corrosion in connectors, or open circuits can disrupt the signal between the sensor and the ECM.

5. ECM Failure

An internal fault in the engine control module may cause it to misinterpret the sensor signal.

How it's diagnosed

  1. Perform a visual inspection of the IMT valve linkage and actuators for signs of breakage or disconnection.
  2. Retrieve freeze frame data using a scan tool to determine the engine conditions when the fault occurred.
  3. Monitor the IMT position sensor voltage via a scan tool while manually cycling the valve to check for smooth signal transitions.
  4. Test the sensor circuit for proper reference voltage, ground, and signal return using a digital multimeter.
  5. Inspect the vacuum lines (if applicable) for leaks or collapses that could prevent the valve from moving.

Code facts & related codes

SystemPowertrain (engine & transmission)
StandardizationManufacturer-specific (P1/B1/C1/U1)
Related codesP2070 — Intake Manifold Tuning Imt Valve StuckP2071 — Intake Manifold Tuning Imt Valve StuckP2072 — Throttle Actuator Control System IceP2073 — Manifold Absolute Pressuremass Air FloP2074 — Manifold Absolute Pressuremass Air FloP2075 — Intake Manifold Tuning Imt Valve Posit

Frequently asked

Can carbon buildup trigger this code?

Yes, carbon deposits in the intake manifold can cause the IMT valve to stick, which results in a range or performance fault.

Do I need to replace the entire intake manifold to fix this?

Not always; depending on the vehicle design, the IMT actuator or position sensor may be replaceable independently of the manifold.

Is the PCM usually the cause of P2076?

No, it is very rare for the PCM to be the cause of this code. Mechanical failure of the valve or a faulty sensor is significantly more likely.