AutoCodes – Chevrolet – U2108 Chevrolet

U2108 Chevrolet Code - Lost Communication With Electronic Brake Control Module

Quick Answer

Modules connected to the Controller Area Network (CAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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: U2108 Chevrolet indicates Lost Communication With Electronic Brake Control Module.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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 5,685

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 Jun 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2108 Chevrolet Description

Modules connected to the Controller Area Network (CAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. Each message contains the identification number of the transmitter module. A module with a CAN serial data circuits malfunction or which loses power during the current ignition cycle will have a Loss of Communication Diagnostic Trouble Code (DTC) set by other modules that depend on information from that failed module. If any of the CAN circuit are shorted to battery voltage, ground, or between them no communication is possible on the CAN serial data bus, a Diagnostic Trouble Code will set.

OBDII Code U2108 Chevrolet - Lost Communication With Electronic Brake Control Module - AutoCodes.com — U2108 Chevrolet Code - Lost Communication With Electronic Brake Control Module

What does this mean?

What are the Possible Causes of the DTC U2108 Chevrolet?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module harness is open or shorted
Electronic Brake Control Module circuit poor electrical connection

How to Fix the DTC U2108 Chevrolet?

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 U2108 Chevrolet 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 U2108 Chevrolet Code

1. What are the common symptoms of OBDII code U2108 in a Chevrolet related to lost communication with the Electronic Brake Control Module (EBCM)?

- Common symptoms include the ABS warning light or traction control light illuminating on the dashboard, issues with the ABS system, and potential loss of communication with the brake module.

2. What are the possible causes of OBDII code U2108 in a Chevrolet indicating a communication problem with the EBCM?

- Potential causes include loose or corroded wiring connections, a faulty EBCM, problems with the CAN bus communication network, or a malfunctioning ABS control module.

3. How can I diagnose OBDII code U2108 in a Chevrolet to pinpoint the exact cause of the lost communication with the EBCM?

- Diagnosing the issue may involve conducting a thorough inspection of the wiring harness, checking for any visible damage, testing the EBCM for proper functionality, and using a diagnostic scanner to retrieve specific fault codes.

4. Is it safe to continue driving my Chevrolet with OBDII code U2108 related to the Electronic Brake Control Module communication problem?

- It is not recommended to drive the vehicle with this issue unresolved, as it may affect the operation of the ABS system and compromise overall braking performance. It is advised to address the problem promptly.

5. Can resetting the OBDII code U2108 in a Chevrolet temporarily resolve the lost communication with the EBCM issue?

- While clearing the code may temporarily turn off the warning lights, it will not fix the underlying problem causing the communication error with the Electronic Brake Control Module. Proper diagnosis and repair are necessary.

6. Are there any specific repair tips for addressing OBDII code U2108 in a Chevrolet related to lost communication with the EBCM?

- Repair tips may include checking and repairing any damaged wiring, ensuring proper connections, inspecting the EBCM for faults, and verifying the integrity of the communication network within the vehicle.

7. How much does it typically cost to repair OBDII code U2108 in a Chevrolet due to a communication issue with the Electronic Brake Control Module?

- Repair costs can vary depending on the exact cause of the problem, the need for replacement parts, and labor charges. It is advisable to consult with a qualified mechanic or dealership for an accurate estimate.

8. Can a DIY enthusiast with automotive knowledge fix OBDII code U2108 in a Chevrolet caused by lost communication with the EBCM?

- While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing issues related to the Electronic Brake Control Module may require specialized tools and expertise. Professional assistance is recommended.

9. Will OBDII code U2108 in a Chevrolet reset itself over time if the communication problem with the EBCM is intermittent?

- The code may clear itself if the communication issue is intermittent and resolves on its own. However, it is still advisable to address the underlying problem to prevent potential safety risks and ensure proper vehicle operation.

10. How can regular maintenance help prevent OBDII code U2108 from occurring in a Chevrolet due to lost communication with the Electronic Brake Control Module?

- Regular maintenance, including inspecting wiring harnesses for damage, keeping connections clean and secure, and addressing any warning lights promptly, can help prevent communication issues with the EBCM that trigger OBDII code U2108.