What Does U0185 Mean?
The vehicle's communication network has lost contact with the antenna control module. This module manages radio reception and antenna positioning or amplification.
Common Causes
35%
Faulty antenna control module internal failure
30%
Damaged wiring harness or corroded connectors between module and network
20%
Loss of power or ground to antenna control module
15%
CAN bus network malfunction or termination resistor failure
Diagnostic Steps
1
Step 1: Verify antenna control module has proper power and ground using multimeter
2
Step 2: Inspect wiring harness and connectors to antenna module for damage, corrosion, or looseness
3
Step 3: Check CAN bus network integrity with scan tool monitoring live data on both CAN lines
4
Step 4: Test antenna control module communication using bidirectional controls if available
5
Step 5: Replace antenna control module if all circuits test good but communication remains lost
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
The vehicle's communication network has lost contact with the antenna control module. This module manages radio reception and antenna positioning or amplification.
The most common cause of U0185 (Lost Communication With Antenna Control Module) is: Faulty antenna control module internal failure
Typical repair costs for U0185 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No direct safety impact. Radio reception and satellite radio functionality may be degraded or inoperative.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0185 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Network
System
Infotainment/Communication Network
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
