General Information

Engine Control

P0643 Sensor Reference Voltage 'A' Circuit High - General Information

Component Location





General Description

The PCM provides a 5 volt reference voltage to the Acceleration Position Sensor 1 (APS 2). The PCM monitors reference voltage deviation from the power supply circuit of the APS 2.

DTC Description

PCM sets DTC P0643 if the PCM detects reference voltage higher than threshold value.

DTC Detecting Condition





Diagnostic Circuit Diagram