P266E"A" Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic (Bank 2)
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P266E describes a bank 2 position signal from actuator A that flickers: brief dropouts or spikes appear while the reading is otherwise fine. Heat cycling near the exhaust side, vibration on a loose pin or a harness rubbing on a bracket can produce it, and it often comes and goes. No manufacturer documents P266E publicly. CARB expects lift system inputs to be checked for continuity and rationality, which includes such short interruptions. A jumping signal makes the lift control on bank 2 unsteady or forces it to a default position, felt as hesitation or uneven running. Logging the sensor value while flexing the harness on that bank is the usual way to catch it.
- What you may notice
- MIL comes and goes
- Hesitation or uneven running
- Fault often not present at the workshop
- Likely causes
- LikelyLoose pin vibrating in the bank 2 sensor plug
- PossibleConnector contact degraded by heat cycling near the exhaust
- PossibleHarness rubbing on a bracket
- 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: €60 – €650
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.