P2655 - Rocker Arm Actuator Control Circuit/Open Bank 2
The P2655 code indicates a problem in the rocker arm actuator control circuit for Bank 2. This system is used in variable valve timing (VVT) engines to adjust valve lift or timing. The Powertrain Control Module (PCM) detects an open or short circuit in the actuator solenoid or wiring. This can lead to reduced engine performance, increased emissions, and potential engine damage if not addressed.
01. Most Common Causes
- Faulty rocker arm actuator solenoid
- Open or short in wiring or connector
- Corroded or damaged electrical connector
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light on
- Rough idle or misfire
- Reduced engine power
- Poor fuel economy
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.
Step 3: Test actuator solenoid resistance with multimeter (specs vary by vehicle).
Step 4: Check for power and ground at actuator connector with key on.
Step 5: If wiring and solenoid are good, test PCM output or replace PCM.
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 engine performance issues and potential damage. Limp mode may activate.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150. Replacing the actuator solenoid can range from $100-$300 including parts and labor.