U0193: Lost Communication With Digital Audio Control Module A

What does U0193 mean?

U0193 is a diagnostic trouble code indicating "Lost Communication With Digital Audio Control Module A". The vehicle's main computer has lost its ability to communicate with a specific module over the data bus. This could be caused by a wiring fault, a blown fuse, or a failed control module.

Symptoms you may notice

• Check engine light (MIL) illuminated on dashboard
• Possible issues with communication bus operation
• Vehicle may enter reduced power mode (limp mode)

Common causes

• Failed control module
• CAN bus wiring fault or short
• Blown fuse to the affected module
• Water intrusion in a connector or module
• Battery voltage too low

What should you do?

This code sits in the climate, audio or convenience side of the car. It does not affect how the car drives or stops. Sort it at your next service unless it is bothering you enough to sort sooner.