A Rocker Arm Actuator Control Circuit/Open Bank 2
What it means
P2655 means the PCM detected an open (broken) electrical circuit to the 'A' rocker arm actuator on bank 2 — the same fault as P2645 but on the opposite cylinder bank. This oil-controlled solenoid switches the engine's variable valve lift, so with the circuit open the engine loses that mode and may run rough or down on power. It's an electrical/oil-control fault, not a no-start condition, and usually traces to wiring or a failed solenoid.
Can I keep driving? Usually driveable — you may lose the variable-lift mode with reduced power or rough running, but fix it soon to protect drivability and fuel economy.
Common symptoms
What you'll notice
- Check-engine light on
- Reduced power or performance
- Rough running or a misfire-like feel
- Valvetrain tick or noise
- Reduced fuel economy
Common causes
Most likely first
- Open circuit — broken wiring or a poor connection to the actuator solenoidLikely
- Faulty rocker arm actuator (oil control) solenoid on bank 2Common
- Low or dirty engine oil affecting the actuatorCommon
- Corroded or loose connector, or a bad groundLess often
- Faulty PCMLess often
How to diagnose & fix
Work through it in order
- Scan and confirm the code, then inspect the bank 2 actuator wiring and connector for an open.
- Check the engine oil level and condition — these actuators are oil-operated.
- Measure the solenoid's resistance and its supply/ground circuits.
- Replace the actuator solenoid if it fails testing.
- Repair wiring as needed, then clear the code and re-test.
FAQ
Quick answers
Is it safe to drive with P2655?+
Can I just clear P2655?+
Related codes
Often seen with P2655
Read & clear P2655 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.