U0193
Lost Communication With Digital Audio Control Module A
Communication network / audio
Generic OBD-II
Low
What it means
U0193 means the vehicle has lost communication with digital audio control module "A" — the amplifier/processor behind the sound system. When it goes offline you typically lose audio or radio functions, but nothing about how the car drives is affected. The cause is normally a wiring, connector, power/ground, software, or bus fault at the module, and it's a low-priority, comfort-only issue.
Low
Can I keep driving? Yes — this only affects the audio system. The car drives normally; you'll likely lose sound or radio functions until it's repaired.
Common symptoms
What you'll notice
- No audio, or sound that cuts in and out
- Radio or media system errors or unresponsiveness
- Infotainment display messages
- Scan tool can't reach the digital audio control module
Common causes
Most likely first
- Wiring or connector fault at the audio moduleLikely
- Power or ground problem to the moduleCommon
- Failed digital audio control moduleCommon
- Software fault or bus wiring issueLess often
How to diagnose & fix
Work through it in order
- Confirm the code and check for related infotainment/audio U-codes.
- Inspect the module's connector, wiring, power, and ground.
- Try a system reset if the vehicle supports one.
- Verify bus communication to the module.
- Replace and program the audio module if it's confirmed faulty.
FAQ
Quick answers
Is it safe to drive with U0193?+
Yes. It's an audio-system fault only and doesn't affect how the vehicle drives, steers, or brakes.
Can I just clear U0193?+
You can try, and a one-off glitch may not return. If the module has a wiring or hardware fault, the code and the loss of audio will come back.
Related codes
Often seen with U0193
Read & clear U0193 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX