U0494
Invalid Data Received From Digital Audio Control Module A
U0494 is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Digital Audio Control Module A. Common causes: problems with the can bus, audio controller malfunction. Estimated repair cost: $28–167.
Symptoms
- Audio system doesn't work
- No sound
- Problems with the navigation system
- Error message on display
- Voice commands don't work
Causes
- Problems with the CAN bus
- Audio controller malfunction
- Broken or shorted wiring
- Problems with power supply to the audio module
- Software glitch
How to Fix
- Check the connections of the audio module connectors
- Check the audio controller supply voltage
- Scan other modules for communication errors
- Flash or reboot the audio module
- Replace a faulty audio controller
Related codes
Error U0494 by Vehicle Brand
FAQ
What does the U0494 code mean?
U0494 is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Digital Audio Control Module A
What causes a U0494 error code?
The most common causes of U0494 include: Problems with the CAN bus; Audio controller malfunction; Broken or shorted wiring; Problems with power supply to the audio module.
How do I fix a U0494 diagnostic trouble code?
To fix U0494: Check the connections of the audio module connectors. Check the audio controller supply voltage. Scan other modules for communication errors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0494?
Yes, but get it checked soon
How much does it cost to fix U0494?
The estimated repair cost for U0494 is $28–167. Actual cost depends on your vehicle, location, and labor rates.
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