P2563
Turbocharger Boost Control Position Sensor Circuit Range/Performance
- Severity
- Medium
- Driving
- Drive only to a garage
The boost control position sensor is answering, but the position it reports does not match what was commanded. That often means the sensor is right and the mechanism really is stuck - soot on the vanes is the usual reason.
Possible causes
- CommonVariable-vane mechanism sticking with soot, on a diesel
- CommonFailed boost control position sensor
- CommonCorroded connector or wiring damaged by exhaust heat
- CommonActuator linkage worn, disconnected or seized
- PossibleLoss of reference voltage or earth
- PossibleFailed actuator motor
What you might notice
- Reduced power or limp mode
- Poor acceleration
- Excessive smoke on a diesel
- Whistling or fluttering from the turbo
- Check engine light on
What to check, in order
- Check the actuator linkage moves freely. On a diesel used mainly for short journeys, soot seizing the variable-vane mechanism is extremely common and cleaning is often the whole repair.
- Watch commanded against actual boost control position on the live data screen through a sweep.
- Inspect the connector for corrosion and heat damage.
- Check the reference voltage and earth at the sensor.
- Suspect the turbocharger itself last - it is by far the most expensive item and by far the least likely cause of a position sensor code.
Read this code from your own car
Plug an ELM327 adapter into the OBD-II port under the dashboard. Pin16 reads every stored, pending and permanent code, explains each one like this page does — offline, with no account — and shows what the car recorded when the fault was set.
Where this code sits
P00xxP01xxP02xxP03xxP04xxP05xxP06xxP07xxP08xxP09xxP0AxxP0BxxP0CxxP0DxxP0ExxP0FxxP10xxP11xxP12xxP13xxP14xxP15xxP16xxP17xxP18xxP19xxP1AxxP1BxxP1CxxP1DxxP1ExxP1FxxP20xxP21xxP22xxP23xxP24xxP25xxP26xxP27xxP28xxP29xxP2AxxP2BxxP2CxxP2DxxP2ExxP2FxxP30xxP31xxP32xxP33xxP34xxP35xxP36xxP37xxP38xxP39xxP3AxxP3BxxP3CxxP3DxxP3ExxP3Fxx
Vehicle speed control, idle control and auxiliary inputs
P2500P2501P2502P2503P2504P2505P2506P2507P2508P2509P2510P2511P2512P2513P2514P2515P2516P2517P2518P2519P2520P2521P2522P2523P2524P2525P2526P2527P2528P2529P2530P2531P2532P2533P2534P2535P2536P2537P2538P2539P2540P2541P2542P2543P2544P2545P2546P2547P2548P2549P2550P2551P2552P2553P2554P2555P2556P2557P2558P2559P2560P2561P2562P2563P2564P2565P2566P2567P2568P2569P2570P2571P2572P2573P2574P2575P2576P2577