What does code U0094 mean?

Q: What does code U0094 mean?

Vehicle Communication Bus H (+) Open. U0094 indicates that the vehicle's communication network has detected an open circuit on the high side of a data bus, meaning the positive wire that carries digital messages between modules is broken or disconnected. The computer that set this code was unable to send or receive signals over that bus line, which can disrupt communication between multiple control modules.

DTC codes / U00xx · Network wiring and bus faults / U0094

U0094Vehicle Communication Bus H (+) Open

U0094 indicates that the vehicle's communication network has detected an open circuit on the high side of a data bus, meaning the positive wire that carries digital messages between modules is broken or disconnected. The computer that set this code was unable to send or receive signals over that bus line, which can disrupt communication between multiple control modules.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaNetwork wiring and bus faults

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.