U029C

Lost Communication With Drive Motor Control Module D

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Hybrid system failure
Inability to change gears
Errors in the operation of the recuperation system

Causes

CAN bus break or damage
Drive motor control module malfunction
Module power problems
Short circuit in the circuit
Contact corrosion

How to Fix

Check the integrity of the CAN bus wiring
Diagnose the drive motor control module
Check fuses and relays
Scan all modules for errors
Update module software

Related codes

U029D U029B U029A