What does code U0263 mean?

Q: What does code U0263 mean?

Lost Communication With Speech Recognition Module. U0263 is a network communication code indicating that a control module on the vehicle's data bus has stopped receiving messages from the speech recognition module, which handles voice commands for features like hands-free calling and navigation. The detecting module sets this code after a calibrated number of missed periodic messages, confirming a loss of communication rather than a single dropped packet.

DTC codes / U02xx · Lost communication with a control module / U0263

U0263Lost Communication With Speech Recognition Module

U0263 is a network communication code indicating that a control module on the vehicle's data bus has stopped receiving messages from the speech recognition module, which handles voice commands for features like hands-free calling and navigation. The detecting module sets this code after a calibrated number of missed periodic messages, confirming a loss of communication rather than a single dropped packet.

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.