AutoCodes – Chevrolet – U0028 2017 Chevrolet Silverado

U0028 2017 Chevrolet Silverado Code - Media Oriented Systems Transport Bus

Quick Answer

The Media Oriented Systems Transport (MOST) bus consists of a physical ring in which multimedia devices share audio, video and infotainment system control data. Common causes include Faulty Audio Unit (Radio), Audio Unit harness is open or shorted, Audio Unit 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: U0028 2017 Chevrolet Silverado indicates Media Oriented Systems Transport Bus.
Common causes: Common causes include Faulty Audio Unit (Radio), Audio Unit harness is open or shorted, Audio Unit 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 442

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 Jul 19, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0028 2017 Chevrolet Silverado Description

The Media Oriented Systems Transport (MOST) bus consists of a physical ring in which multimedia devices share audio, video and infotainment system control data. Each device on the MOST bus transmits and receives data via the MOST Bus Serial Data (+/- transmit/receive) circuits. The MOST bus diagnostic master is the Radio. The MOST control circuit is connected to each device on the MOST bus. Each device provides a 12 V signal on the MOST control circuit. The Radio initiates communication on the MOST bus at Ignition ON by toggling the MOST control circuit low for 100 ms. Once each device recognizes the wakeup signal from the Radio on the MOST control circuit, they will respond to the Radio on the MOST bus to indicate no faults are present and normal communications will commence. The Diagnostic Trouble Code (DTC) sets when a fault occurs on transmit, receive, electronic control lines, or internal device failure.

OBDII Code U0028 2017 Chevrolet Silverado - Media Oriented Systems Transport Bus - AutoCodes.com — U0028 2017 Chevrolet Silverado Code - Media Oriented Systems Transport Bus

What does this mean?

What are the Possible Causes of the DTC U0028 2017 Chevrolet Silverado?

Faulty Audio Unit (Radio)
Audio Unit harness is open or shorted
Audio Unit circuit poor electrical connection

How to Fix the DTC U0028 2017 Chevrolet Silverado?

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 U0028 2017 Chevrolet Silverado 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.

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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 U0028 2017 Chevrolet Silverado Code

1. What does the OBDII code U0028 on a 2017 Chevrolet Silverado mean?

The U0028 code on a 2017 Chevrolet Silverado refers to a Media Oriented Systems Transport (MOST) Bus communication error.

2. What are some common symptoms of the U0028 code in a 2017 Chevrolet Silverado?

Common symptoms of the U0028 code may include issues with the vehicle's infotainment system, radio, navigation, or other media-related components.

3. What are possible causes of the U0028 code in a 2017 Chevrolet Silverado?

Possible causes of the U0028 code include damaged wiring, loose connections, faulty components in the MOST Bus system, or issues with the control modules.

4. How can I diagnose the U0028 code on a 2017 Chevrolet Silverado?

Diagnosing the U0028 code typically involves inspecting the MOST Bus wiring, connectors, and components for any visible damage, testing the control modules, and using a diagnostic scan tool to identify the specific issue.

5. Can I still drive my 2017 Chevrolet Silverado with the U0028 code present?

It is not recommended to drive the vehicle with the U0028 code present, as it may lead to further damage to the vehicle's media systems or other related components.

6. What is the repair process for the U0028 code on a 2017 Chevrolet Silverado?

The repair process for the U0028 code may involve repairing or replacing damaged wiring, securing loose connections, replacing faulty components, or reprogramming control modules as needed.

7. Can I reset the U0028 code on my 2017 Chevrolet Silverado myself?

While you can attempt to clear the U0028 code using an OBDII scanner, it is important to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

8. How much does it typically cost to repair the U0028 code on a 2017 Chevrolet Silverado?

The cost of repairing the U0028 code can vary depending on the extent of the issue, the parts needed for repair, and labor costs. It is advisable to consult a professional mechanic for an accurate estimate.

9. Are there any preventive maintenance tips to avoid the U0028 code on a 2017 Chevrolet Silverado?

Regularly inspecting and maintaining the vehicle's MOST Bus system, keeping connectors clean and secure, and addressing any issues promptly can help prevent the occurrence of the U0028 code.

10. Is the U0028 code common in 2017 Chevrolet Silverado vehicles?

The U0028 code related to the MOST Bus communication error may not be as common as other OBDII codes, but it can still occur in 2017 Chevrolet Silverado vehicles due to various factors affecting the media systems.