Intake Manifold Runner Control Circuit/Open Bank 2
The P2011 code indicates a problem with the intake manifold runner control (IMRC) circuit on bank 2. The IMRC system uses actuators and flaps to optimize airflow into the engine at different RPMs. When the PCM detects an open circuit or malfunction in the bank 2 control circuit, it triggers this code. This can lead to reduced engine performance, especially at low RPMs, and may cause the check engine light to illuminate.
01. Most Common Causes
- Faulty intake manifold runner control actuator on bank 2
- Open or shorted wiring in the IMRC circuit
- Corroded or loose electrical connector
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light on
- Reduced engine power or hesitation during acceleration
- Poor fuel economy
- Rough idle or stalling
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for additional codes.
Step 2: Visually inspect the IMRC actuator and wiring on bank 2 for damage or corrosion.
Step 3: Test the actuator resistance and compare to manufacturer specifications.
Step 4: Check for power and ground at the actuator connector using a multimeter.
Step 5: If wiring and actuator are good, test the PCM output signal.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally safe to drive short distances, but reduced performance and fuel economy may occur. Prolonged driving could lead to further issues, so repair is recommended.
How much does it cost to fix?▼
Repair costs vary from $150 to $400, depending on the cause. Replacing the actuator is typically $100-$250 for parts and labor, while wiring repairs may be less.