U0193 code meaning
Lost Communication With Digital Audio Control Module A
What U0193 means
U0193 reports that digital audio control module A no longer sends its messages. Makers fill this slot differently. GM calls it Lost Communication With Digital Radio Receiver Control Module in the Saab 9-5 (2010-2011) U-code list, i.e. the separate receiver for digital or satellite radio, and its 2017-2021 GMC Acadia and Cadillac XT5 bulletin lists U0193 among codes caused by harness chafing or water in the BCM. Chrysler's 2006-2010 Jeep code list uses U0193 for a traffic information receiver module. GM's logic: a supervised periodic message is missing at 9-16 V. U0194 is module B, U0184 the radio, U0186 the amplifier. Digital radio or traffic data drops out; no MIL.
U0193 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0193
- Digital, satellite radio or traffic data unavailable
- Radio shows no signal for the digital source
- Code stored in radio and other modules
Common causes of U0193
- Most likelyDigital receiver module without power or ground
- PossibleChafed harness or water in connectors (GM Acadia/XT5)
- PossibleBus wire or connector to the receiver damaged
- Less likelyDigital audio module A faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Digital audio control moduleCAN bus wiring
What each part of U0193 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 93 | The exact fault in that area. |
What to do next
- Note U0193 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0193
What does U0193 mean?
U0193 means "Lost Communication With Digital Audio Control Module A". U0193 reports that digital audio control module A no longer sends its messages. It is a generic code, so it means the same on every make.
Is it safe to drive with U0193?
U0193 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U0193 fail an emissions test?
U0193 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U0193 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will U0193 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.