Advanced Diagnostics

DTC P0A1F (122): F-CAN Malfunction (Battery Condition Monitor (BCM) Module-Motor Control Module (MCM)




General Description
The motor control module (MCM) receives data from the battery condition monitor (BCM) module through two channels of the controller area network (CAN) (F-CAN, IMA-CAN).

When no information is sent from the BCM module to both the IMA-CAN and F-CAN for a set time or more continuously, or when the information sent from the BCM module is abnormal and this condition continues for a set time or more, the MCM detects a malfunction in the BCM module and a DTC is stored.




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




Enable Conditions

Malfunction Threshold
One of these conditions occurs.
- No information is sent from the BCM module for at least 0.5 seconds.
- The information sent from the BCM module is abnormal at least 10 times.

Diagnosis Details

Conditions for illuminating the MIL
When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the PCM and MCM memory.

Conditions for clearing the MIL
The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.