Rocker Arm Actuator Control Circuit High Bank 2
The P2659 code indicates that the Powertrain Control Module (PCM) has detected a high voltage condition in the rocker arm actuator control circuit for Bank 2. This actuator controls the variable valve timing or cylinder deactivation system. A high voltage reading typically points to a short to power, a faulty actuator, or a wiring issue.
1. Most Common Causes
- Short to battery voltage (B+) in the rocker arm actuator control circuit wiring
- Internally damaged or low-resistance rocker arm actuator solenoid
- Corroded, loose, or damaged solenoid connector or terminal
- Faulty engine control module (ECM/PCM) generating an incorrect signal
- Excessive resistance in the solenoid ground circuit
2. Symptoms You Will Notice
- Check Engine Light on
- Reduced engine performance
- Poor fuel economy
- Rough idle or misfire
3. Step-by-Step Diagnosis
Step 1: Use a scan tool to retrieve all codes and freeze frame data.
Step 2: Visually inspect the wiring and connectors for Bank 2 rocker arm actuator for damage or corrosion.
Step 3: Test the actuator circuit for high voltage using a multimeter (should be within manufacturer specs).
Step 4: Check the actuator resistance and compare to specifications; replace if out of range.
Step 5: If wiring and actuator are good, test the PCM output and consider reprogramming or replacement.
4. 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 to the valve train.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, depending on the cause (wiring repair vs. actuator replacement) and labor rates.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.