What does code U0017 mean?

Q: What does code U0017 mean?

Medium Speed CAN Communication Bus (-) High. U0017 indicates that the medium-speed Controller Area Network (CAN) bus negative circuit has been detected at an abnormally high voltage level, typically near battery positive or floating above the normal recessive bias. The computer or gateway module monitoring that bus segment has logged a fault because the CAN- line is not being pulled low as expected during communication.

DTC codes / U00xx · Network wiring and bus faults / U0017

U0017Medium Speed CAN Communication Bus (-) High

U0017 indicates that the medium-speed Controller Area Network (CAN) bus negative circuit has been detected at an abnormally high voltage level, typically near battery positive or floating above the normal recessive bias. The computer or gateway module monitoring that bus segment has logged a fault because the CAN- line is not being pulled low as expected during communication.

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.