OBD-II code · Powertrain (generic, extended)
P2661 B Rocker Arm Actuator System Performance/Stuck Off Bank 2
The rocker arm actuator B on bank 2 is commanded to engage but does not switch.
Is it safe to drive with P2661?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyLow oil pressure cannot move the actuator
- PossibleMechanical lock pin stuck in unactivated position
- Less likelyCarbon or debris buildup preventing free movement
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–5.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Rocker Arm Actuator B B2, Oil Control Valve, Oil Supply
Related codes
- P2646A Rocker Arm Actuator System Performance/Stuck Off Bank 1
- P2651B Rocker Arm Actuator System Performance/Stuck Off Bank 1
- P2656A Rocker Arm Actuator System Performance/Stuck Off Bank 2
- P265EB Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 1
- P265FVariable A/C Compressor Control Circuit Range/Performance
- P2660B Rocker Arm Actuator Control Circuit / Open Bank 2
- P2662B Rocker Arm Actuator System Stuck On Bank 2
- P2663B Rocker Arm Actuator Control Circuit Low Bank 2
- P2664B Rocker Arm Actuator Control Circuit High Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.