Intake Manifold Runner Position Sensor Circuit Range/Performance Problem (Bank 1)

The engine computer monitors the position of the intake manifold runner. If it sees values that are out of range or inconsistent for bank 1, it sets this code.

The ECM expects a certain voltage range from the intake manifold runner position sensor, typically between 0.5V (fully closed) and 4.5V (fully open). If it sees values less than 0.4V or more than 4.6V, or if the signal varies too much, it throws the code.

Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.

1. 11. Inspect the wiring and connectors for the intake manifold runner position sensor. Look for fraying, pinched wiring, or loose connections. If any issues are found, repair them and clear the code. Did the code return?
2. 22. Check the intake manifold runner position sensor with a multimeter. Access the sensor connector and check for voltage at the sensor connector while the engine is running. Is the voltage within the expected range (0.5V to 4.5V)?
3. 33. If the voltage is out of range, replace the intake manifold runner position sensor. Clear the code and retest. Did the code return?
4. 44. If the voltage is within range, check the operation of the intake manifold runner control actuator. Manually activate the actuator (if possible) and listen for operation. Is it functioning properly?
5. 55. If the actuator isn't operating correctly, replace it and retest. If all components seem alright, check for carbon buildup in the intake manifold or vacuum leaks affecting the sensor readings.

• Faulty intake manifold runner position sensor
• Wiring issues or damaged connectors
• Failed intake manifold runner control actuator
• Carbon buildup in the intake manifold
• Vacuum leaks affecting airflow

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