General Information

P0643 Sensor Reference Voltage A Circuit High

General Information

Component Location





General Description

The 5 V reference line is monitored for malfunctions that could result in improper sensor operation.

DTC Description

When PCM detects that the power for sensors (5 V) is over 5.75 V during 3 sec or more, PCM sets DTC P0643.

DTC Detecting Condition