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 expected value, it sets this code. This can be caused by a stuck runner, faulty actuator, vacuum leak, or wiring issues.
1. Most Common Causes
- Sticking or binding intake manifold runner flaps
- Faulty IMRC actuator or motor
- Vacuum leak in the IMRC system
- Wiring or connector issues in the IMRC circuit
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine performance and fuel economy
- Rough idle or hesitation during acceleration
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data to confirm P200B.
Step 2: Visually inspect the intake manifold runner control linkage and actuator for binding or damage.
Step 3: Test the IMRC actuator with a scan tool or multimeter to verify proper operation.
Step 4: Check for vacuum leaks in the IMRC system using a smoke machine or vacuum gauge.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as reduced performance and fuel economy may occur, and further damage to the intake manifold or engine is possible.
How much does it cost to fix?▼
Repair costs typically range from $50 to $150 for parts and labor, depending on the cause and vehicle model.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.