U049C

Invalid Data Received From Battery Charger Control Module A

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Malfunction warning on the instrument panel
Battery charging problems
Reduced engine power (in hybrids)
Inability to start (in electric cars)
Extended charging time

Causes

Damage to the wiring harness to the charging module
Charging control module A fault
Module power problems
Contact corrosion
Software error in the module

How to Fix

Check the integrity of the wiring harness to the module
Check the power supply and ground of the module
Read extended module error codes
Update module software
Replace the charging control module if necessary

Related codes

U049D U049B U0401