U01B3
Lost Communication With Brake Blending Actuator
U01B3 is an OBD-II diagnostic trouble code meaning: Lost Communication With Brake Blending Actuator. Common causes: broken or damaged wires in the communication circuit, oxidation of contacts in connectors. Estimated repair cost: $56–278.
Symptoms
- Check Engine Light Is On
- Deterioration in braking performance
- Disabling the regenerative braking system
- An error message appears on the instrument panel
- System transition to emergency mode
Causes
- Broken or damaged wires in the communication circuit
- Oxidation of contacts in connectors
- Brake mix module malfunction
- Module power problems
- Software error 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 module supply voltage
- Scan the module for additional errors
- Repair only from an authorized dealer
Related codes
Error U01B3 by Vehicle Brand
FAQ
What does the U01B3 code mean?
U01B3 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Brake Blending Actuator
What causes a U01B3 error code?
The most common causes of U01B3 include: Broken or damaged wires in the communication circuit; Oxidation of contacts in connectors; Brake mix module malfunction; Module power problems.
How do I fix a U01B3 diagnostic trouble code?
To fix U01B3: Check the integrity of the wiring harness to the module. Inspect and clean the contacts in the connectors. Check the module supply voltage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U01B3?
Limited driving only, diagnose soon
How much does it cost to fix U01B3?
The estimated repair cost for U01B3 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat