P2660
B Rocker Arm Actuator Control Circuit/Open Bank 2
Variable valve lift
Generic OBD-II
Medium
What it means
P2660 means an open in the control circuit for the 'B' rocker-arm actuator (a variable valve-lift oil control valve) on bank 2. The engine still runs, but it can lose the lift stage that valve controls.
Medium
Can I keep driving? Drivable, but you may notice reduced power or rougher running at certain engine speeds because the variable valve-lift actuator on bank 2 isn't being controlled.
Common symptoms
What you'll notice
- Check-engine light on
- Reduced power, especially at higher rpm
- Slightly rough running or a missing power step
- Possible minor drop in fuel economy
Common causes
Most likely first
- Open or broken wire in the rocker-arm actuator (oil control valve) circuitLikely
- Corroded or loose connector at the actuator or PCMCommon
- Faulty oil control valve / rocker-arm actuator solenoidCommon
- Low or dirty engine oil affecting the oil control valveLess often
- Faulty PCM driverLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame, then inspect the bank 2 actuator wiring and connector for an open.
- Check engine oil level and condition — dirty oil can jam the oil control valve.
- Measure the actuator solenoid resistance and compare to spec.
- Repair any open in the control circuit between the actuator and PCM.
- If wiring and solenoid are good, suspect the PCM driver. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2660?+
Yes, generally. The engine runs, just with less performance. Fix it to restore full power and avoid related valvetrain issues.
Can I just clear P2660?+
It comes back until the open circuit or actuator fault is repaired.
Related codes
Often seen with P2660
Read & clear P2660 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