P265A"B" Rocker Arm Actuator Position Sensor Circuit (Bank 1)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Lift systems that move the rocker geometry with an electric motor, such as Toyota Valvematic, need a sensor that tells the engine controller the actual adjustment angle. P265A flags a general electrical problem with the feedback sensor that reports where actuator B on bank 1 sits: the controller sees no usable signal but cannot classify it as simply too low or too high. Toyota's own bulletins place a Valvematic feedback complaint under the neighbouring B sensor code P265B, which shows Toyota uses this sensor letter; P265A itself is not documented publicly by any manufacturer. CARB requires circuit checks on all inputs of a valve lift system. A loose connector, a broken reference or ground wire, or a sensor failure are the likely reasons; P265B to P265E narrow the fault down.
- What you may notice
- MIL on
- Lift held at a fixed value, sluggish response
- Higher fuel consumption
- Likely causes
- LikelyLoose or corroded connector at the B position sensor
- PossibleOpen 5 V reference or sensor ground wire
- PossibleFailed position sensor inside the lift controller
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €80 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.