P2586Turbocharger Boost Control Position Sensor B Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2586 covers a general electrical fault at position sensor B, which reports where the second boost control actuator stands - the vane mechanism or electric wastegate of a second turbocharger on engines that regulate two of them separately. The engine computer cannot use the feedback, without the fault being pinned down as low (P2588), high (P2589) or sporadic (P2590); P2587 is a position mismatch with a working circuit. No manufacturer documents P2586 publicly. CARB requires the sensors of the boost control system to be monitored as comprehensive components. For sensor A, Kia service action SA078 on the 2011 Optima 2.0 T-GDI pairs the circuit code P2562 with an electric wastegate actuator whose rod length must be reset. Boost is usually limited.
- What you may notice
- Malfunction indicator lamp on
- Reduced power because boost is capped
- No valid position value for actuator B in live data
- Likely causes
- LikelyConnector or terminal fault at the actuator B position sensor
- PossibleHarness to actuator B damaged by exhaust heat
- PossiblePosition sensor inside actuator B failed (often replaced as a unit)
- 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 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.