What does code U0096 mean?

Q: What does code U0096 mean?

Vehicle Communication Bus H (+) High. U0096 is a generic network communication code indicating that the vehicle's main communication bus, typically the high-speed CAN (Controller Area Network) bus, has detected an abnormally high voltage on its H (high) line. The computer or gateway module that monitors bus voltage has seen the CAN H signal rise above the normal expected range, which can disrupt communication between multiple electronic control units.

DTC codes / U00xx · Network wiring and bus faults / U0096

U0096Vehicle Communication Bus H (+) High

U0096 is a generic network communication code indicating that the vehicle's main communication bus, typically the high-speed CAN (Controller Area Network) bus, has detected an abnormally high voltage on its H (high) line. The computer or gateway module that monitors bus voltage has seen the CAN H signal rise above the normal expected range, which can disrupt communication between multiple electronic control units.

SystemNetwork

Code typeGeneric (all makes)

SeverityHigh

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.