U012B
Lost Communication With Chassis Control Module B
U012B is an OBD-II diagnostic trouble code meaning: Lost Communication With Chassis Control Module B. Common causes: open or short circuit in the communication circuit, poor contact in the module connector. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Possible problems with the operation of stabilization systems
- Errors in other chassis-related systems
- Reduced suspension functionality
- In some cases, no obvious symptoms
Causes
- Open or short circuit in the communication circuit
- Poor contact in the module connector
- Chassis control module B malfunction
- Module power problems
- Software errors in the ECU
How to Fix
- Check the integrity of the wiring harness to the module
- Inspect and clean the contacts in the connectors
- Check the power supply and ground of the module
- Test Chassis Control Module B
- Update ECU software if necessary
Related codes
Error U012B by Vehicle Brand
FAQ
What does the U012B code mean?
U012B is an OBD-II diagnostic trouble code that indicates: Lost Communication With Chassis Control Module B
What causes a U012B error code?
The most common causes of U012B include: Open or short circuit in the communication circuit; Poor contact in the module connector; Chassis control module B malfunction; Module power problems.
How do I fix a U012B diagnostic trouble code?
To fix U012B: Check the integrity of the wiring harness to the module. Inspect and clean the contacts in the connectors. Check the power supply and ground of the module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U012B?
Limited driving only, diagnose soon
How much does it cost to fix U012B?
The estimated repair cost for U012B is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat