General Information

P0641 Sensor Reference Voltage 'A' Circuit/Open

General Information

Component Location





General Description

The PCM provides a 5 volt reference voltage to Throttle Position Sensor 1 (TPS1). The PCM monitors reference voltage deviation from the power supply circuit of the sensors.

DTC Description

Checking the voltage from sensor power supply every 1.87 sec. under detecting condition, if the value within detecting condition lasts for more than 0.2 sec., PCM sets P0641.

DTC Detecting Condition





Diagnostic Circuit Diagram