U1205 Code: Meaning, Causes, and Symptoms | OBD2 Codes

U1205 – IMA-CAN Malfunction Battery Condition Monitor Module-Motor Control Module

 

U1205 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

U1205 Possible Causes

 

Faulty Motor Control Module (MCM) / Battery Condition Monitor (BCM),Motor Control Module (MCM) / Battery Condition Monitor (BCM) harness is open or shorted,Motor Control Module (MCM) / Battery Condition Monitor (BCM) circuit poor electrical connection

 

U1205 Description

 

The Integrated Motor Assist-Controller Area Network (IMA-CAN) uses two signal lines, IMACANH and IMACANL, and it receives and transmits multiple signals simultaneously to/from multiple control modules. When the information is not sent from the Motor Control Module (MCM) through the IMA-CAN and this condition continues for a specified time or when the information sent from the MCM is abnormal and this condition continues for a specified cycle, the Battery Condition Monitor (BCM) module detects a malfunction and when BUS-OFF is not detected after the time to detect BUS-OFF has passed, a DTC is stored.