U027C

Lost Communication With Off-Board Charger Control Module

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Inability to charge battery
Check Engine Light Illuminates
Error message on display
Reduced vehicle power
Switching to emergency mode

Causes

Open or short circuit in the communication circuit
Charging module malfunction
Problems with the CAN bus
Software glitches
Damage to connectors or wiring harness

How to Fix

Check the integrity of wiring and connectors
Diagnose the state of the CAN bus
Scan the charging module for errors
Update system software
Replace the faulty module if necessary

Related codes

U027B U027D U028C