Home >> Subaru >> 2015 >> WRX STI >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) (STI) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P2109 Throttle/Pedal Position Sensor "A" Minimum Stop Performance >> Component Description