Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance Bank 2
The Intake Manifold Runner Control (IMRC) system on Bank 2 is not operating within the expected range or is performing outside normal parameters. This code indicates the engine computer detected a position sensor or control valve malfunction affecting the variable intake manifold runner system on the second cylinder bank.
What You Might Notice
- Check engine light illuminated
- Lack of engine power or acceleration
- Occasional misfires during operation
- Poor fuel economy
- Rough idle or hesitation
Most Common Causes
- 1
Sticking or faulty IMRC valve Bank 2
The intake manifold runner control valve on Bank 2 may be stuck in one position or electrically/mechanically faulty, preventing proper airflow adjustment and causing the sensor to read out-of-range values.
- 2
Faulty IMRC actuator or sensor Bank 2
The actuator solenoid or position sensor for Bank 2 may be malfunctioning electrically, sending incorrect position signals to the PCM or failing to respond to control commands.
- 3
Sticking or faulty throttle body/plates
Carbon buildup or mechanical failure in the throttle body can affect overall intake manifold performance and trigger secondary codes related to runner position sensing.
- 4
Faulty Powertrain Control Module (PCM)
Rarely, the PCM itself may have a software glitch or hardware failure affecting IMRC control circuits, though this is uncommon and requires professional diagnosis to confirm.
How to Diagnose It
- 1
Check Sticking or faulty IMRC valve Bank 2 — The intake manifold runner control valve on Bank 2 may be stuck in one position or electrically/mechanically faulty, preventing proper airflow adjustment and causing the sensor to read out-of-range values.
- 2
Check Faulty IMRC actuator or sensor Bank 2 — The actuator solenoid or position sensor for Bank 2 may be malfunctioning electrically, sending incorrect position signals to the PCM or failing to respond to control commands.
- 3
Check Sticking or faulty throttle body/plates — Carbon buildup or mechanical failure in the throttle body can affect overall intake manifold performance and trigger secondary codes related to runner position sensing.
- 4
Check Faulty Powertrain Control Module (PCM) — Rarely, the PCM itself may have a software glitch or hardware failure affecting IMRC control circuits, though this is uncommon and requires professional diagnosis to confirm.
How to Fix It
- 1
Clean or replace IMRC valve Bank 2
Remove the intake manifold and inspect the IMRC valve on Bank 2 for carbon buildup or mechanical damage. Clean with appropriate solvent or replace the valve assembly if damaged.
- 2
Replace IMRC actuator solenoid Bank 2
Test the IMRC solenoid actuator electrical resistance and response; if faulty, remove and replace with OEM or quality aftermarket part and clear the code.
- 3
Replace IMRC position sensor Bank 2
If the position sensor is sending out-of-range signals, disconnect and replace it with a new sensor, then recalibrate or clear codes as needed.
- 4
Clean throttle body and intake system
Remove carbon deposits from the throttle body and intake passages to restore proper airflow dynamics and ensure sensor accuracy across the intake manifold.
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