U044D
Invalid Data Received From Generator B Control Module
U044D is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Generator B Control Module. Common causes: alternator b wiring or connector problems, generator control module b malfunction. Estimated repair cost: $56–278.
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
Error U044D by Vehicle Brand
FAQ
What does the U044D code mean?
U044D is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Generator B Control Module
What causes a U044D error code?
The most common causes of U044D include: Alternator B wiring or connector problems; Generator Control Module B Malfunction; Circuit Grounding Problems; Malfunction of generator B itself.
How do I fix a U044D diagnostic trouble code?
To fix U044D: 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. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U044D?
Limited driving only, diagnose soon
How much does it cost to fix U044D?
The estimated repair cost for U044D is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat