P2586 code meaning
Turbocharger Boost Control Position Sensor B Circuit
Powertrain system Generic code P25xx codes Check engine light
What P2586 means
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.
P2586 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2586
- Malfunction indicator lamp on
- Reduced power because boost is capped
- No valid position value for actuator B in live data
Common causes of P2586
- Most 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)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Turbo actuator position sensor bSensor wiring
What each part of P2586 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 5 | Area: vehicle speed, idle control and auxiliary inputs. |
| 86 | The exact fault in that area. |
What to do next
- Note P2586 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2586
What does P2586 mean?
P2586 means "Turbocharger Boost Control Position Sensor B Circuit". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with P2586?
Drive gently and only to a workshop. With P2586 the car can go into limp mode (reduced power) to protect itself.
Will P2586 fail an emissions test?
Yes, it can. P2586 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2586 to fix?
Difficulty: hard. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P2586 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.