OBD-II code · Powertrain (generic, extended)
P265B B Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 1
The position sensor reading does not transition cleanly between the two valve lift modes for actuator B on bank 1.
Is it safe to drive with P265B?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- PossibleSensor signal drift after thermal aging
- PossibleWorn lock pin reduces travel between modes
- Less likelySensor element aged beyond calibration window
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Rocker Arm Position Sensor B B1, Actuator Mechanism
Related codes
- P264BA Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 1
- P266BA Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 2
- P267BB Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 2
- P2658A Rocker Arm Actuator Control Circuit Low Bank 2
- P2659A Rocker Arm Actuator Control Circuit High Bank 2
- P265AB Rocker Arm Actuator Position Sensor Circuit Bank 1
- P265CB Rocker Arm Actuator Position Sensor Circuit Low Bank 1
- P265DB Rocker Arm Actuator Position Sensor Circuit High Bank 1
- P265EB Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.