Intake Manifold Runner Control Circuit High Bank 1
The Powertrain Control Module (PCM) monitors the electrical circuit of the Intake Manifold Runner Control (IMRC) actuator on Bank 1 to optimize airflow. Code P2010 is set when the PCM detects an unexpectedly high voltage in this circuit, typically indicating a short to power or an open circuit.
While the vehicle is generally safe to drive, this issue can cause reduced engine performance, poor fuel economy, and increased emissions. It should be diagnosed and repaired soon to restore proper engine operation.
Common symptoms
- Illuminated Check Engine Light
- Reduced engine power and performance
- Hesitation or stumbling during acceleration
- Rough engine idle
- Decreased fuel economy
Likely causes
- Shorted to voltage wiring in the IMRC circuit
- Faulty Intake Manifold Runner Control (IMRC) actuator or solenoid
- Open circuit or broken wire in the IMRC harness
- Corroded or loose electrical connector at the IMRC actuator
- Carbon buildup causing the IMRC valve to bind (leading to electrical overload)
- Faulty Powertrain Control Module (PCM)
What to check before replacing parts
Inspect the IMRC wiring harness and connector.
Look for: Look for frayed wires, melted insulation, or corroded pins that could cause a short to voltage or an open circuit.
Use a scan tool to command the IMRC actuator.
Look for: Look for the actuator to move smoothly; if it does not respond and the circuit voltage remains high on the data stream, the circuit or actuator is faulty.
Test the IMRC actuator connector with a multimeter.
Look for: Look for proper reference voltage and ground; a constant 12V on the control wire when it should be grounded indicates a short to power.
Measure the internal resistance of the IMRC actuator.
Look for: Look for resistance values outside the manufacturer's specified range, which indicates a failed internal solenoid or motor.
Manually operate the intake manifold runner linkage.
Look for: Look for physical binding or excessive resistance caused by carbon buildup, which can sometimes cause actuator circuit faults or prevent proper operation.
This page explains the generic P2010 definition and is general reference information, not a diagnosis for your specific vehicle. Actual causes, severity, and repairs vary by make, model, engine, and mileage — always confirm with a scan tool and a qualified technician before replacing parts.
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