AutoCodes – Generic – U1205

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

Quick Answer

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. Common causes include 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. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U1205 indicates IMA-CAN Malfunction Battery Condition Monitor Module-Motor Control Module.
Common causes: Common causes include 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.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 14,736

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code 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.

OBDII Code U1205 - IMA-CAN Malfunction Battery Condition Monitor Module-Motor Control Module - AutoCodes.com — U1205 Code - IMA-CAN Malfunction Battery Condition Monitor Module-Motor Control Module

What does this mean?

What are the Possible Causes of the DTC U1205?

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

How to Fix the DTC U1205?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U1205 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Information for Specific Makes

U1205 Honda — IMA-CAN Malfunction Battery Condition Monitor Module-Motor Control Module

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.