U01B4 - Lost Communication With Brake System Control Module B
U01B4 is a generic network/communication diagnostic trouble code indicating Lost Communication With Brake System Control Module B. It relates to the System-Specific system.
DTC Breakdown (SAE J2012)
| System | Network/Communication (U) |
| Type | Generic |
| Subsystem | System-Specific |
| Fault Index | B4 |
| Standard | SAE J2012 / ISO 15031-6 |
What does diagnostic code U01B4 mean?
The dtc/">diagnostic trouble code U01B4 represents Lost Communication With Brake System Control Module B. This standard generic code points to a monitored fault condition in the vehicle's Network/Communication network.
Detailed diagnostic guides and specific fix procedures for code U01B4 are currently being compiled. Always verify check engine warnings with a qualified mechanic.
Frequently Asked Questions about U01B4
What does U01B4 mean?
The diagnostic trouble code U01B4 represents Lost Communication With Brake System Control Module B. This standard generic code points to a monitored fault condition in the vehicle's Network/Communication network.
What is the system for U01B4?
The U01B4 code is located in the vehicle's Network/Communication network.