AutoCodes – Chevrolet – U2098 2017 Chevrolet Silverado

U2098 2017 Chevrolet Silverado Code - MOST Communication Enable Circuit Malfunction

Quick Answer

When the ignition is ON, the Radio initializes the Media Oriented Systems Transport (MOST) bus by sending a short 100 ms low voltage pulse on the electronic control line (or MOST control line) connected to all devices contained on the MOST ring. Common causes include Faulty Radio, Radio harness is open or shorted, Radio 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: U2098 2017 Chevrolet Silverado indicates MOST Communication Enable Circuit Malfunction.
Common causes: Common causes include Faulty Radio, Radio harness is open or shorted, Radio 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 240

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 24, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code U2098 2017 Chevrolet Silverado Description

When the ignition is ON, the Radio initializes the Media Oriented Systems Transport (MOST) bus by sending a short 100 ms low voltage pulse on the electronic control line (or MOST control line) connected to all devices contained on the MOST ring. When MOST receive, transmit or control line faults are detected, transmit/receive messages will not receive as expected from the wakeup request. The Radio and the Human Machine Interface Control Module will then perform diagnostics to isolate these MOST faults. If the MOST control line is shorted low to 0 V for an excess amount of time, the Radio and the Audio Amplifier, if equipped, will set a U2098 Diagnostic Trouble Code (DTC), and Human Machine Interface Control Module, if equipped, will set a U0029 02 DTC. At this point, the MOST bus will be unable to communicate until the shorted MOST control line is repaired. The DTC will be set when the Radio senses a short to ground on the MOST control circuit.

OBDII Code U2098 2017 Chevrolet Silverado - MOST Communication Enable Circuit Malfunction - AutoCodes.com — U2098 2017 Chevrolet Silverado Code - MOST Communication Enable Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC U2098 2017 Chevrolet Silverado?

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

How to Fix the DTC U2098 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 does this mean?

Code Tech Notes

U2098 00 MOST Communication Enable Circuit Malfunction
U2098 02 MOST Communication Enable Circuit Short to Ground

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U2098 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.

Need more information about the U2098 2017 Chevrolet Silverado code?

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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 U2098 2017 Chevrolet Silverado Code

What does the OBDII code U2098 indicate on a 2017 Chevrolet Silverado?

The U2098 code suggests a malfunction in the MOST (Media Oriented Systems Transport) communication enable circuit, indicating a problem with the network that handles multimedia and entertainment systems in the vehicle.

What are common symptoms of code U2098 in a 2017 Chevrolet Silverado?

Symptoms might include issues with the audio or navigation systems, such as intermittent functionality, complete failure of the infotainment system, or the system rebooting unexpectedly.

What can cause the U2098 code to appear in a 2017 Chevrolet Silverado?

Possible causes include damaged or faulty wiring, problems with the control modules connected to the MOST bus, or a failure in one of the components of the infotainment system such as the head unit or amplifier.

How can I diagnose the U2098 code in a 2017 Chevrolet Silverado?

Diagnosing this code typically involves using a scan tool to check for additional fault codes that might indicate where the malfunction is occurring, inspecting the wiring and connectors for damage or corrosion, and testing the functionality of the multimedia system components.

What are the steps to repair the U2098 code in a 2017 Chevrolet Silverado?

Repair steps may include repairing or replacing damaged wires or connectors, replacing faulty components of the infotainment system, or resetting and updating the software of the infotainment control module.

Is it safe to drive a 2017 Chevrolet Silverado with the U2098 code?

While it might be safe to drive with this code, as it primarily affects the entertainment system, it can be inconvenient especially if the malfunction affects navigation or communication systems crucial for driving.

Can the U2098 code affect other systems in my 2017 Chevrolet Silverado?

While U2098 primarily impacts the multimedia and entertainment systems, issues in the MOST bus can potentially affect other systems integrated into the network, such as vehicle telematics or voice control features.

What tools are needed to diagnose and repair the U2098 code in a 2017 Chevrolet Silverado?

You will typically need a professional OBD-II scan tool that can interact with the vehicleâ€™s MOST bus, a multimeter for testing circuits, and basic hand tools for accessing and repairing the wiring and components.