The Turbocharger Boost Control Position Sensor (TBCPS) allows the PowertrainControl module (PCM) to make adjustments to the amount of boost delivered to the turbocharger during vehicle operation. In this process, if the PCM adjusts the pulses like the manufacturer, fuel delivery and ignition timing will be efficient.
In case the PCM detects that the Turbocharger Control Position Sensor voltage supply wire has a voltage level below 0.3 volts according to the manufacturer’s set parameters, the diagnostic code P2564 OBDII will be stored.