General Information

Engine

Engine Control - P0651 Sensor Reference Voltage B Circuit/Open - General Information

Component Location





General Description

The PCM provides a 5volt reference voltage to the Acceleration Position Sensor 2 (APS 2), Throttle Position Sensor 2 (TPS 2), A/C pressure sensor and power steering sensor. 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 P0651. MIL (Malfunction Indication Lamp) turns on when the malfunction lasts till consecutive 2 driving cycle.

DTC Detecting Condition





Diagnostic Circuit