P2660 - B Rocker Arm Actuator Control Circuit/Open Bank 2
The P2660 code indicates a problem with the rocker arm actuator control circuit for Bank 2. This system varies valve lift or timing to improve fuel economy and performance. The 'B' actuator typically controls the exhaust valves. An open circuit means the PCM detects no voltage or continuity in the control circuit, often due to a wiring issue, connector problem, or failed actuator solenoid.
01. Most Common Causes
- Faulty rocker arm actuator solenoid (Bank 2)
- Open or shorted wiring in the actuator control circuit
- Corroded or damaged connector at the actuator
- Failed engine control module (PCM)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine performance and fuel economy
- Rough idle or misfire
- Possible engine knocking or abnormal noise
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect wiring and connectors for Bank 2 rocker arm actuator for damage, corrosion, or loose connections.
Step 3: Use a multimeter to check resistance and continuity of the actuator solenoid and circuit.
Step 4: Test actuator operation by applying battery voltage and ground (if safe) to see if it clicks.
Step 5: If wiring and actuator are good, check PCM output signals and consider PCM replacement.
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 it can cause reduced performance, poor fuel economy, and potential engine damage if the actuator fails in a way that affects valve operation.
How much does it cost to fix?▼
The cost typically ranges from $200 to $600, including parts (actuator solenoid $50-$150) and labor (1-3 hours at $100-$150 per hour).