Intake Manifold Runner Performance Bank 2
The P200B code indicates that the powertrain control module (PCM) has detected a performance issue with the intake manifold runner control (IMRC) system on bank 2. The IMRC system uses flaps or valves inside the intake manifold to optimize airflow at different engine speeds. When the PCM detects that the runner position does not match the commanded position or that the system response is slower than expected, it sets this code. This can be caused by carbon buildup, a faulty actuator, or wiring issues.
01. Most Common Causes
- Carbon buildup on intake manifold runner flaps
- Faulty intake manifold runner control actuator
- Wiring or connector issues in the IMRC circuit
- Failed intake manifold runner position sensor
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or hesitation during acceleration
- Poor fuel economy
- Rough idle or engine stalling
03. Step-by-Step Diagnosis
Step 1: Scan the vehicle for codes and record freeze frame data.
Step 2: Visually inspect the intake manifold for carbon buildup and check the IMRC actuator and wiring for damage.
Step 3: Use a scan tool to command the IMRC system and monitor the actual position vs. commanded position.
Step 4: Test the actuator and position sensor with a multimeter per manufacturer specifications.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as reduced engine performance and potential stalling can be dangerous. Have it diagnosed promptly.
How much does it cost to fix?▼
Costs vary from $50 for cleaning carbon buildup to $150 for replacing an actuator, plus labor. Total can be $200-$500 at a shop.