What does code U0014 mean?

Q: What does code U0014 mean?

Medium Speed CAN Communication Bus (+) High. U0014 indicates that the medium-speed Controller Area Network (CAN) bus positive circuit is reading a voltage higher than the normal range, which the module interprets as a short to power or an open ground reference. The computer has detected that the CAN+ line is stuck at or above the maximum threshold, disrupting communication between modules on that bus.

DTC codes / U00xx · Network wiring and bus faults / U0014

U0014Medium Speed CAN Communication Bus (+) High

U0014 indicates that the medium-speed Controller Area Network (CAN) bus positive circuit is reading a voltage higher than the normal range, which the module interprets as a short to power or an open ground reference. The computer has detected that the CAN+ line is stuck at or above the maximum threshold, disrupting communication between modules on that bus.

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.