General Information

Engine Control
P0643 Sensor Reference Voltage - General Information

Component Location





General Description

The ECM provides a 5volt reference voltage to the Acceleration Position Sensor1(APS2). The ECM monitors reference voltage deviation from the power supply circuit of the APS2.

DTC Description

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

DTC Detecting Condition





Diagnostic Circuit Diagram