Intake Manifold Runner Position Sensor Circuit Intermittent Bank 2
The P2023 code indicates an intermittent fault in the intake manifold runner position sensor circuit for bank 2. This sensor monitors the position of the intake manifold runner control (IMRC) flaps, which adjust air intake length for optimal performance. An intermittent signal can cause the powertrain control module (PCM) to lose track of flap position, leading to reduced engine efficiency, power loss, and potential drivability issues.
01. Most Common Causes
- Faulty intake manifold runner position sensor
- Damaged or corroded wiring/connectors in the sensor circuit
- Intermittent short or open in the sensor signal circuit
- Failed IMRC actuator or stuck flaps
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power and acceleration
- Poor fuel economy
- Rough idle or hesitation
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data to confirm P2023 and check for related codes.
Step 2: Visually inspect the sensor and wiring for damage, corrosion, or loose connections.
Step 3: Use a multimeter to test sensor resistance and voltage per manufacturer specs.
Step 4: Check IMRC actuator operation and flap movement for binding or failure.
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 the issue can cause reduced power and fuel economy, and may lead to further engine damage.
How much does it cost to fix?▼
Repair costs typically range from $50 to $150 for sensor replacement, but can be higher if wiring repairs or actuator replacement is needed.