U0184Network Communication

Lost Communication With Radio

U0184 means a module has lost communication with the radio over the CAN bus. The audio or infotainment system may not respond. It usually points to a wiring, power, ground, or connector fault.

🚗 Yes. Losing the radio does not affect driving, only the audio and infotainment system.

LOW

severity

🎯 Top Causes, Ranked by Likelihood

#1Wiring, connector, or CAN bus fault$50-$400

45%

Damaged or corroded wiring to the radio.

#2Power or ground fault$50-$300

30%

Blown fuse or poor ground at the radio.

#3Failed radio module$200-$1000

15%

The radio or head unit itself has failed.

🩺 Common Symptoms

Radio not working
No audio or infotainment
Blank display
Steering wheel audio controls dead
Other U-codes stored

💰 Repair Cost: DIY vs Shop

DIY Cost

$50-$300

Shop Cost

$100-$800

📋 Free OBD2 Code Cheat Sheet

The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.

🔧 How to Diagnose U0184

1Check radio fuses, power, and grounds

2Inspect CAN wiring and connectors at the radio

3Scan all modules for lost-communication patterns

4Back-probe the CAN bus for correct signal

❓ Frequently Asked Questions

Can I drive with U0184?

Yes. It only affects the audio and infotainment system, not driving. Repair it when convenient.

What causes U0184?

Wiring, connector, or power/ground faults at the radio, most often.

Why is my radio dead with U0184?

The radio needs to be online to receive commands. When it loses communication, it can go silent or blank.

🔗 Related Codes

U0100U0140U0164U0155