AutoCodes - Generic - U0184

U0184 Code - Lost Communication With Radio Unit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|U0184 code possible causes

  • Faulty Radio Unit
  • Radio Unit harness is open or shorted
  • Radio Unit circuit poor electrical connection

|How do I fix the U0184 code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Cost of diagnosing the U0184 code

Labor: 1.0

The cost of diagnosing the U0184 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are U0184 code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|U0184 code description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Radio Unit has not been received.
OBDII Code U0184 - Lost Communication With Radio Unit - AutoCodes.com

|Need more information with the U0184 code?

Need more information on how to fix the U0184 code? Get Access to Factory Service Manuals

|U0184 code information for specific makes

|Need help with a U0184 code?

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|U0184 code comments

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Repair Importance Level: 3
 
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