High Speed CAN Communication Bus

Q: What does code U0001 mean?

High Speed CAN Communication Bus: Communication failure on the high-speed CAN bus network. Can affect multiple vehicle systems.

Network Code · High

What does U0001 mean?

Communication failure on the high-speed CAN bus network. Can affect multiple vehicle systems.

System: CAN Bus

U0001 is a network diagnostic trouble code indicating high speed can communication bus. This code is classified as high severity, which means: address soon — may cause further damage.

Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.