Advanced Diagnostics

Advanced Diagnostics - DTC P0AC0 (65): Battery Current Sensor 1 Circuit Malfunction






General Description
The motor control module (MCM) calculates the offset value of the battery current sensor during no voltage condition of the battery module immediately after the ignition switch is turned to ON (II). The MCM converts (analog/digital conversion) the ISOC signal input voltage and when the difference between the maximum value and the minimum value of eight continuous inputs are within 0.015 V, the average value of eight battery current sensor inputs are calculated. When the battery current sensor average value is out of a specified range, a malfunction is detected and a DTC is stored.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status






Enable Conditions






Malfunction Threshold
The average value of the battery current sensor input deviates from the range of 2.24 V to 2.76 V.

Diagnosis Details

Conditions for setting the DTC
When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the MCM memory.

Conditions for clearing the DTC
The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.