What does code U0191 mean?

Q: What does code U0191 mean?

Lost Communication With Television. U0191 is a generic network communication code indicating that a control module on the vehicle's data bus has lost contact with the television module, which is typically part of the rear-seat entertainment system. The computer detected that the expected periodic messages from the television module stopped arriving within the required time window, so it flagged the communication fault.

DTC codes / U01xx · Lost communication with a control module / U0191

U0191Lost Communication With Television

U0191 is a generic network communication code indicating that a control module on the vehicle's data bus has lost contact with the television module, which is typically part of the rear-seat entertainment system. The computer detected that the expected periodic messages from the television module stopped arriving within the required time window, so it flagged the communication fault.

SystemNetwork

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaLost communication with a control module

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