OBD-II code · Powertrain (generic, extended)
P264C A Rocker Arm Actuator Position Sensor Circuit Low Bank 1
The position sensor signal is below the lower diagnostic threshold. Usually a shorted sensor or short to ground in the harness.
Is it safe to drive with P264C?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyInternal short in sensor element
- PossibleSignal wire shorted to ground
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.8–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Rocker Arm Position Sensor A B1, Wiring Harness
Related codes
- P265CB Rocker Arm Actuator Position Sensor Circuit Low Bank 1
- P266CA Rocker Arm Actuator Position Sensor Circuit Low Bank 2
- P267CB Rocker Arm Actuator Position Sensor Circuit Low Bank 2
- P2649A Rocker Arm Actuator Control Circuit High Bank 1
- P264AA Rocker Arm Actuator Position Sensor Circuit Bank 1
- P264BA Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 1
- P264DA Rocker Arm Actuator Position Sensor Circuit High Bank 1
- P264EA Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 1
- P264FEngine Serial Number Not Programmed or Incompatible
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.