P2659
A Rocker Arm Actuator Control Circuit High Bank 2
Variable valve lift (rocker arm actuator)
Generic OBD-II
Medium
What it means
P2659 means the PCM saw high voltage in the 'A' rocker arm actuator control circuit on bank 2. This oil-operated actuator switches the engine's variable valve lift, so a fault usually costs some power, smoothness, or economy rather than stopping the car. Common causes are a failed oil control valve, a wiring short to voltage, or low/dirty oil.
Medium
Can I keep driving? Yes — usually drivable, but you may lose the variable valve-lift mode, with reduced power, slightly rougher running, or worse economy; repair to restore normal performance.
Common symptoms
What you'll notice
- Check-engine light on
- Reduced power or dull throttle response
- Rough running at certain RPM ranges
- Reduced fuel economy
Common causes
Most likely first
- Faulty rocker arm oil control valve/actuator (bank 2)Likely
- Short to voltage in the actuator control circuitCommon
- Open or damaged wiring or connector at the actuatorCommon
- Low or dirty engine oil affecting actuator operationLess often
- PCM fault (least likely)Less often
How to diagnose & fix
Work through it in order
- Check engine oil level and condition first — the actuator is oil-operated.
- Inspect the bank 2 actuator connector and wiring for a short to power or chafing.
- Back-probe and measure the actuator/solenoid resistance against spec.
- Clear the code and retest to confirm before replacing parts.
- Replace the oil control valve if it fails; consider the PCM only after wiring checks out.
FAQ
Quick answers
Is it safe to drive with P2659?+
Generally yes, short-term. The engine still runs, but it may hold a lower-performance valve mode. Fix it soon to restore power and economy and avoid added wear.
Can I just clear P2659?+
You can, but a control-circuit or actuator fault will bring it back. Low or dirty oil is a common trigger, so check that before clearing.
Related codes
Often seen with P2659
Read & clear P2659 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX