P2563 Subaru Turbocharger Boost Control Position Sensor Performance

The variable Geometry Turbocharger (VGT) is electronically activated by the Electronic Turbo Actuator. The Electronic Turbo Actuator is a smart device that receives information via the CAN BUS from the Engine Control Module (ECM). The Electronic Turbo Actuator perform his own diagnostic and reports failures to the ECM using the CAN BUS. The ECM then decodes the errors message and convert it to a fault code.