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 of the engine. The IMRC system uses flaps or valves inside the intake manifold to optimize airflow at different engine speeds. When the powertrain control module (PCM) detects an open circuit or malfunction in the control solenoid or actuator for bank 2, it sets this code. This can lead to reduced engine performance, poor fuel economy, and increased emissions.
1. Most Common Causes
- Faulty IMRC/IMTV actuator with an open coil
- Cut or disconnected wiring between the ECM and the actuator
- Corroded connector or damaged pins
- Blown control circuit fuse
- Internal ECM failure (less common)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power and acceleration
- Poor fuel economy
- Rough idle or hesitation
3. 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 for damage or corrosion.
Step 3: Test the IMRC actuator resistance and compare to manufacturer specs.
Step 4: Check for power and ground at the actuator connector with a multimeter.
Step 5: If wiring and actuator are okay, test the PCM output signal.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
You can drive short distances, but reduced performance and potential stalling make it unsafe for long trips. Repair promptly.
How much does it cost to fix?▼
Repair costs range from $150 to $400, including parts (actuator or solenoid) and labor. Diagnostic fees may add $50-$100.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.