U01B9 - Lost Communication With Switch Input Module “C”
U01B9 is a generic network/communication diagnostic trouble code indicating Lost Communication With Switch Input Module “C”. It relates to the System-Specific system.
DTC Breakdown (SAE J2012)
| System | Network/Communication (U) |
| Type | Generic |
| Subsystem | System-Specific |
| Fault Index | B9 |
| Standard | SAE J2012 / ISO 15031-6 |
What does diagnostic code U01B9 mean?
The dtc/">diagnostic trouble code U01B9 represents Lost Communication With Switch Input Module “C”. 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 U01B9 are currently being compiled. Always verify check engine warnings with a qualified mechanic.
Frequently Asked Questions about U01B9
What does U01B9 mean?
The diagnostic trouble code U01B9 represents Lost Communication With Switch Input Module “C”. This standard generic code points to a monitored fault condition in the vehicle's Network/Communication network.
What is the system for U01B9?
The U01B9 code is located in the vehicle's Network/Communication network.