Code P2564 indicates that the engine control module has detected a voltage signal from the turbocharger boost control position sensor that is lower than the normal operating range. This typically means the sensor or its associated circuitry is reporting a value near ground.
The internal circuitry of the boost control position sensor has failed, resulting in a low voltage output.
The signal or return wire is chafed or damaged, causing the electrical current to leak to the chassis.
Moisture or debris in the actuator connector has created high resistance or a poor connection.
The electronic actuator assembly has suffered an internal electrical failure affecting the feedback sensor.
The engine control module is unable to correctly process the incoming signal due to an internal circuit fault.
In most modern turbochargers, the position sensor is integrated into the actuator assembly and cannot be replaced as a standalone part.
Not necessarily; this code refers to the electronic control system. The turbocharger's internal mechanical components may still be functional.
No. While the PCM is listed as a possibility, the vast majority of P2564 cases are caused by sensor failure or wiring issues. Replacing the PCM without verifying the wiring is generally incorrect.