DTC P1125: Accelerator Pedal Position System: Description

The Accelerator Pedal Position (APP) sensors are mounted on the accelerator pedal of the Throttle Actuator Control (TAC) module assembly. There are 3 individual APP sensors within 1 housing. Three separate signal, low reference and 5-volt reference circuits. If only 1 APP sensor DTC is set, the redundant APP systems allow the Electronic Throttle Control (ETC) system to continue operating normally. This DTC sets if the Powertrain Control Module (PCM) detects a condition with more than 1 APP sensor. One APP sensor Diagnostic Trouble Code (DTC) will not cause the Reduced Engine Power message to be displayed. Two APP sensor DTCs for the same sensor also will not cause the Reduced Engine Power message to be displayed. However, if 2 or more DTCs are set involving more than 1 APP sensor, this DTC will set and the Reduced Engine Power message is displayed.