Intake Manifold Runner Position Sensor Circuit Range/Performance Bank 1
The P2015 code indicates that the Engine Control Module (ECM) has detected a malfunction in the intake manifold runner position sensor circuit for Bank 1. This sensor monitors the position of the intake manifold runner control (IMRC) flaps, which adjust airflow into the engine for optimal performance and emissions. The code is triggered when the sensor signal is out of the expected range or the flaps do not move as commanded, often due to carbon buildup, a faulty actuator, or wiring issues.
1. Most Common Causes
- Faulty or worn intake manifold runner position sensor
- Stuck or mechanically failed intake manifold runner actuator
- Damaged, corroded, or loose sensor wiring or connectors
- Short circuit or open circuit in the sensor harness
- Carbon buildup or dirt on the intake manifold runner valves
- Failed ECM/PCM (less common)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or hesitation during acceleration
- Poor fuel economy
- Rough idle or stalling
3. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm P2015 and check for additional codes.
Step 2: Visually inspect the intake manifold runner control actuator and wiring for damage or loose connections.
Step 3: Test the sensor and actuator with a multimeter or scan tool to verify proper operation.
Step 4: Inspect the intake manifold for carbon buildup and clean if necessary.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause reduced performance and potential engine damage. Limp mode may activate, limiting speed.
How much does it cost to fix?▼
Repair costs range from $150 to $400 depending on the cause. Cleaning carbon buildup is cheaper, while replacing the sensor or actuator is more expensive.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.