B Rocker Arm Actuator Position Sensor Circuit Low Bank 2
The P267C code indicates that the powertrain control module (PCM) has detected a low voltage signal from the rocker arm actuator position sensor on Bank 2. This sensor monitors the position of the rocker arm actuator, which controls variable valve timing or cylinder deactivation. A low circuit condition typically means the signal voltage is below the expected range, often due to a short to ground, faulty sensor, or wiring issues. This can affect engine performance, fuel economy, and emissions.
01. Most Common Causes
- Faulty rocker arm actuator position sensor
- Short to ground in the sensor circuit
- Damaged wiring or connector
- Corrosion or poor electrical connection
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine performance or power loss
- Rough idle or misfire
- Decreased fuel economy
- Possible engine stalling
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data to confirm P267C.
Step 2: Visually inspect the wiring and connector for Bank 2 rocker arm actuator sensor for damage, corrosion, or loose connections.
Step 3: Use a multimeter to check sensor signal voltage (should be 0.5-4.5V) and compare to manufacturer specs.
Step 4: Test the sensor by actuating the rocker arm and monitoring voltage changes; replace if out of range.
Step 5: If sensor and wiring are okay, check for a short to ground in the circuit and repair as needed.
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 poor engine performance, increased emissions, and potential damage to the variable valve timing system. Have it diagnosed promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and sensor replacement, but can be higher if wiring repairs are needed or if the PCM is faulty.