P2563 - Positionsgeber für Ladedrucksteller: unplaus. Signal (Solution)

The error code P2563, "Boost pressure control valve position sensor - implausible signal," is set when the position feedback from the boost pressure control valve is not within the expected range. With our diagnostic systems HEX-NET and HEX-V2, you can easily identify this issue and conduct further troubleshooting. For other vehicle brands, we offer our OBD diagnostic system.

Possible causes:
- Faulty electrical wiring/connections to the position sensor.
- Faulty boost pressure control valve (e.g., the vacuum sensor does not hold a vacuum, or an electric actuator like those found in 3.0 V6 TDI engines is mechanically or electrically defective).
- The turbocharger's wastegate is stuck or difficult to move (the actuator cannot properly adjust the valve).
- Engine control unit (ECU) defective (due to water ingress or similar).

Slotti20 wrote:

Hello diesel mechanics, I tried to reply to your article P2563, but I'm not a moderator. I wanted to add that this problem can also occur due to a fault in the vacuum system. In my case, it was a broken air connection on the vacuum actuator of the EGR valve in a T5 built in 2014 with a 2.0 TDI engine. This causes the vacuum actuator in the turbocharger control system to operate at its full range, and the sensor then reports an error. It starts with a flashing preheating indicator, followed by the engine check light illuminating. Best regards, Slotti20

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Thank you for the information! Yes, a lack of or incorrect vacuum pressure can also be caused by something else. You can use VCDS and the actuator test function to test the actuators in the vacuum system.