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U2099 2017 Chevrolet Silverado Code - High Speed Communication Enable Circuit

Quick Answer

The U2099 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado refers to a fault in the High Speed Communication Enable Circuit. Common causes include Faulty High Speed Communication Enable Circuit wiring, Loose or corroded connections in the communication network, Defective control modules. 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
U2099 2017 Chevrolet Silverado indicates High Speed Communication Enable Circuit.
Common causes
Common causes include Faulty High Speed Communication Enable Circuit wiring, Loose or corroded connections in the communication network, Defective control modules.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code U2099 2017 Chevrolet Silverado Description

The U2099 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado refers to a fault in the High Speed Communication Enable Circuit. This code indicates a communication issue between different modules or systems in the vehicle that operate at high speed on the Controller Area Network (CAN) bus. The CAN bus is a vital communication network that allows various electronic control units (ECUs) in the vehicle to exchange data and work together to ensure proper functioning.

OBDII Code U2099 2017 Chevrolet Silverado - High Speed Communication Enable Circuit
U2099 2017 Chevrolet Silverado Code - High Speed Communication Enable Circuit

Common Causes of U2099 2017 Chevrolet Silverado

  1. Faulty High Speed Communication Enable Circuit wiring
  2. Loose or corroded connections in the communication network
  3. Defective control modules
  4. Electrical interference or short circuits in the CAN bus
  5. Water or moisture intrusion causing damage to the communication system

Symptoms of U2099 2017 Chevrolet Silverado

  1. Check engine light illuminated
  2. Loss of communication with various vehicle systems
  3. Erratic behavior of electronic components
  4. Inconsistent or non-functional operation of critical systems
  5. Vehicle may go into limp mode

How to Fix U2099 2017 Chevrolet Silverado

  1. Diagnose the specific cause of the U2099 code using a diagnostic scanner to pinpoint the issue in the High Speed Communication Enable Circuit.
  2. Inspect the wiring harness, connectors, and terminals for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Check all control modules involved in the communication network for proper functioning. Replace any faulty modules.
  4. Perform a thorough inspection of the CAN bus system to identify and rectify any electrical interference, shorts, or water damage.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved and the systems are communicating properly.

Cost to Fix U2099 2017 Chevrolet Silverado

The typical repair costs for addressing a U2099 code in a 2017 Chevrolet Silverado can range from $150 to $500, depending on the specific cause of the issue and the extent of repairs needed. This estimate includes parts and labor. Keep in mind that the actual cost may vary based on the location, dealership or independent repair shop rates, and the time required for diagnosis and repair. It's advisable to consult with a qualified technician for an accurate cost estimate tailored to your vehicle's situation.

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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 U2099 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code U2099 in a 2017 Chevrolet Silverado?

- Common symptoms include issues with the vehicle's high-speed communication network, such as erratic behavior of electronic components or warning lights on the dashboard.

2. What does the U2099 code "High Speed Communication Enable Circuit" mean for a 2017 Chevrolet Silverado?

- This code indicates a problem with the high-speed communication enable circuit in the vehicle's onboard diagnostic system, affecting the communication between various control modules.

3. What are the possible causes of OBDII code U2099 in a 2017 Chevrolet Silverado?

- Possible causes include damaged wiring or connectors in the high-speed communication network, faulty control modules, or issues with the OBD system itself.

4. How can I diagnose the U2099 code in my 2017 Chevrolet Silverado?

- Diagnosing the U2099 code typically involves using a diagnostic scanner to retrieve the code and then conducting a thorough inspection of the high-speed communication network components and related wiring.

5. Can I continue driving my 2017 Chevrolet Silverado with the U2099 code present?

- It is not recommended to continue driving the vehicle with the U2099 code present, as it can lead to further electrical system issues and potential safety hazards.

6. How can I repair the U2099 code in my 2017 Chevrolet Silverado?

- Repairing the U2099 code may involve fixing any damaged wiring or connectors, replacing faulty control modules, or resetting the communication network through proper diagnostics and repairs.

7. Is the U2099 code a common issue in 2017 Chevrolet Silverado vehicles?

- While not extremely common, the U2099 code can occur in 2017 Chevrolet Silverado vehicles due to potential wiring or module failures within the high-speed communication network.

8. Can I reset the U2099 code in my 2017 Chevrolet Silverado using a simple OBDII scanner?

- Resetting the U2099 code may require more than just clearing the code with a basic OBDII scanner, as the underlying issue causing the code needs to be diagnosed and repaired first.

9. Will the U2099 code cause my 2017 Chevrolet Silverado to fail an emissions test?

- The U2099 code itself may not directly cause the vehicle to fail an emissions test, but it indicates an issue that should be addressed to ensure proper functioning of the vehicle's systems.

10. How much can I expect to pay for repairs related to the U2099 code in my 2017 Chevrolet Silverado?

- The cost of repairs for the U2099 code can vary depending on the specific issue causing the code, but it is recommended to consult with a professional mechanic for an accurate estimate.

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