U012D
Lost Communication With Generator A Control Module
U012D is an OBD-II diagnostic trouble code meaning: Lost Communication With Generator A Control Module. Common causes: broken or damaged wires between the ecm and the generator, generator control module malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Irregular battery charging
- Reduced generator efficiency
- Possible voltage fluctuations in the on-board network
Causes
- Broken or damaged wires between the ECM and the generator
- Generator control module malfunction
- Poor connection in connectors
- Generator module power supply problems
- Malfunction of the generator itself
How to Fix
- Check the integrity of wiring and connectors
- Diagnose the generator control module
- Check the power and ground of the generator module
- If necessary, replace the generator control module
- Check the operation of the generator itself
Related codes
Error U012D by Vehicle Brand
FAQ
What does the U012D code mean?
U012D is an OBD-II diagnostic trouble code that indicates: Lost Communication With Generator A Control Module
What causes a U012D error code?
The most common causes of U012D include: Broken or damaged wires between the ECM and the generator; Generator control module malfunction; Poor connection in connectors; Generator module power supply problems.
How do I fix a U012D diagnostic trouble code?
To fix U012D: Check the integrity of wiring and connectors. Diagnose the generator control module. Check the power and ground of the generator module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U012D?
Limited driving only, diagnose soon
How much does it cost to fix U012D?
The estimated repair cost for U012D is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat