OBD-II code · Powertrain (generic, extended)
P2664 B Rocker Arm Actuator Control Circuit High Bank 2
Voltage on the rocker arm actuator B control line on bank 2 is above the expected window. Typical causes are a short to battery or an open solenoid coil.
Is it safe to drive with P2664?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyControl wire shorted to B+
- PossibleOpen solenoid coil
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Rocker Arm Actuator B B2, Oil Control Valve, Wiring Harness
Related codes
- P2649A Rocker Arm Actuator Control Circuit High Bank 1
- P2654B Rocker Arm Actuator Control Circuit High Bank 1
- P2659A Rocker Arm Actuator Control Circuit High Bank 2
- P2661B Rocker Arm Actuator System Performance/Stuck Off Bank 2
- P2662B Rocker Arm Actuator System Stuck On Bank 2
- P2663B Rocker Arm Actuator Control Circuit Low Bank 2
- P2665Fuel Shutoff Valve B Control Circuit / Open
- P2666Fuel Shutoff Valve B Control Circuit Low
- P2667Fuel Shutoff Valve B Control Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.