Lost Communication With Auxiliary Audio Input Module
The U0185 code means the vehicle's onboard diagnostic system has detected: Lost Communication With Auxiliary Audio Input Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- easy
- Estimated cost
- $75 - $350 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
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Common Symptoms
- Auxiliary audio input not functioning
- USB audio connection not recognized
- Media hub or input jack inoperative
- Cannot switch to auxiliary source on head unit
- Connected devices not detected
Probable Causes (Ranked by Likelihood)
- Failed auxiliary input module or media hub Very High
- Damaged wiring to auxiliary input jack High
- Corroded USB or aux port from spilled liquids Moderate
- Software fault in head unit Low
Step-by-Step Diagnostic Procedure
-
Inspect the auxiliary jack and USB port for debris or corrosion
-
Check the media hub module connector (often in center console or glove box)
-
Verify power and ground at the media hub
-
Test with a different cable and device to rule out external issues
-
Try a system reset by disconnecting the battery
Frequently Asked Questions
Can I drive with code U0185?
Yes, completely safe to drive. Only the auxiliary audio input is affected. Radio and other audio sources may still work normally.
What causes U0185?
Usually a failed media hub or auxiliary input module. Spilled drinks in the center console area can corrode the USB or aux jack connections.
Is U0185 expensive to fix?
Typically $75 to $350. The media hub module is often a simple plug-and-play replacement located in the console or glove box area.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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