AutoCodes – Generic – U0189

U0189 Code - Lost Communication With Digital Disc Player/Changer Module 'C'

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Digital Disc Player/Changer Module 'C', Digital Disc Player/Changer Module 'C' harness is open or shorted, Digital Disc Player/Changer Module 'C' circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U0189 indicates Lost Communication With Digital Disc Player/Changer Module 'C'.
Common causes: Common causes include Faulty Digital Disc Player/Changer Module 'C', Digital Disc Player/Changer Module 'C' harness is open or shorted, Digital Disc Player/Changer Module 'C' circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,143

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0189 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 Digital Disc Player/Changer Module 'C' has not been received.

OBDII Code U0189 - Lost Communication With Digital Disc Player/Changer Module 'C' - AutoCodes.com — U0189 Code - Lost Communication With Digital Disc Player/Changer Module 'C'

What does this mean?

What are the Possible Causes of the DTC U0189?

Faulty Digital Disc Player/Changer Module 'C'
Digital Disc Player/Changer Module 'C' harness is open or shorted
Digital Disc Player/Changer Module 'C' circuit poor electrical connection

How to Fix the DTC U0189?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0189 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U0189 code?

Need more information on how to fix the U0189 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0189 code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U0189 Code

What does the OBDII code U0189 mean?

Code U0189 indicates the vehicle's communication network has lost connection with the Digital Disc Player/Changer Module 'C'.

What are the common symptoms of code U0189?

Symptoms may include a non-functioning CD/DVD player, inability to access media features, or intermittent audio system issues.

What causes the U0189 code to appear?

Common causes include faulty wiring or connectors, a malfunctioning Digital Disc Player/Changer Module, or network communication issues.

Can a dead battery trigger code U0189?

Yes, a dead or weak battery can cause communication errors like U0189 due to voltage drops affecting the network.

How do you diagnose code U0189?

Diagnosis involves checking the wiring and connectors for damage, inspecting the module for faults, and testing the vehicleâ€™s communication network.

Can code U0189 affect other systems in the vehicle?

Typically, U0189 only affects the audio system, but in rare cases, it may cause minor disruptions in other infotainment features.

How do you fix code U0189?

Repairs may involve replacing damaged wiring, reconnecting loose connectors, or replacing the faulty Digital Disc Player/Changer Module.

Is it safe to drive with code U0189?

Yes, it is generally safe to drive with this code, as it does not affect the vehicleâ€™s primary functions, but the audio system may be impaired.

How much does it cost to repair code U0189?

Repair costs vary but can range from $100 to $500 depending on whether the issue is wiring-related or requires module replacement.

Can resetting the code solve the U0189 issue?

Resetting the code may temporarily clear it, but the underlying issue must be addressed to prevent recurrence.

Discuss the causes and fixes for U0189 OBDII Code

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