U044D

Invalid Data Received From Generator B Control Module

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine Light Is On
Low battery level
Problems starting the engine
Unstable operation of electrical equipment
Reduced hybrid system efficiency (if applicable)

Causes

Alternator B wiring or connector problems
Generator Control Module B Malfunction
Circuit Grounding Problems
Malfunction of generator B itself
Software error in control module

How to Fix

Check the condition of the wiring harness and connectors of generator B
Check power and grounding of generator control module B
Scan generator module B for additional trouble codes
If necessary, replace generator control module B or generator
Update control module software (if available)

Related codes

U044C U044E U044F