AutoCodes – Chevrolet – U0028 2016 Chevrolet Silverado

U0028 2016 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 2016 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 350

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 2016 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 2016 Chevrolet Silverado - Media Oriented Systems Transport Bus - AutoCodes.com — U0028 2016 Chevrolet Silverado Code - Media Oriented Systems Transport Bus

What does this mean?

What are the Possible Causes of the DTC U0028 2016 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 2016 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 2016 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 2016 Chevrolet Silverado Code

1. What does the OBDII code U0028 on a 2016 Chevrolet Silverado indicate?

The U0028 code on a 2016 Chevrolet Silverado refers to a problem with the Media Oriented Systems Transport (MOST) Bus communication system.

2. What are some common symptoms of a U0028 code on a 2016 Chevrolet Silverado?

Common symptoms of a U0028 code may include issues with the vehicle's audio system, navigation system, or other media-related features not functioning properly.

3. What are possible causes of the U0028 code on a 2016 Chevrolet Silverado?

Possible causes of the U0028 code can include a faulty MOST Bus module, damaged wiring or connectors in the MOST Bus system, or a malfunction in one of the connected media devices.

4. How can I diagnose a U0028 code on my 2016 Chevrolet Silverado?

Diagnosing a U0028 code typically involves using a diagnostic scanner to retrieve the specific details of the code, checking for any related trouble codes, and inspecting the MOST Bus system components for any visible damage.

5. Can I still drive my 2016 Chevrolet Silverado with a U0028 code?

It is not recommended to drive the vehicle with a U0028 code present, as it may indicate a communication issue that could potentially affect the vehicle's overall performance and safety systems.

6. How can I repair a U0028 code on my 2016 Chevrolet Silverado?

Repairing a U0028 code often involves addressing the root cause of the communication problem, which may include replacing a faulty MOST Bus module, repairing damaged wiring or connectors, or resetting the communication system.

7. Is it possible to reset a U0028 code on a 2016 Chevrolet Silverado without professional help?

Resetting a U0028 code may be possible by disconnecting the vehicle's battery for a few minutes to clear the code. However, it is recommended to have the underlying issue diagnosed and repaired by a professional technician.

8. Are there any preventive maintenance steps to avoid a U0028 code on a 2016 Chevrolet Silverado?

Regularly checking and maintaining the vehicle's electrical connections, including those related to the media systems, can help prevent issues that may trigger a U0028 code.

9. Can a U0028 code on a 2016 Chevrolet Silverado be a recurring problem?

If the root cause of the U0028 code is not properly addressed during repairs, it is possible for the issue to recur. Ensuring that all components of the MOST Bus system are thoroughly inspected and repaired can help prevent recurring problems.

10. How much does it typically cost to repair a U0028 code on a 2016 Chevrolet Silverado?

The cost of repairing a U0028 code can vary depending on the specific cause of the issue, the extent of the repairs needed, and the labor rates of the repair shop. It is advisable to consult with a professional technician for an accurate estimate.