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U1900 Chevrolet Code - Lost Communication With Speech To Text Interface Module

Quick Answer

The U1900 code in a Chevrolet indicates that the vehicle has lost communication with the Speech to Text Interface Module. Common causes include Faulty wiring or connections leading to the Speech to Text Interface Module, Corrosion or damage to the module itself, Software issues or glitches affecting communication. 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
U1900 Chevrolet indicates Lost Communication With Speech To Text Interface Module.
Common causes
Common causes include Faulty wiring or connections leading to the Speech to Text Interface Module, Corrosion or damage to the module itself, Software issues or glitches affecting communication.
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 Aug 30, 2024
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Code U1900 Chevrolet Description

The U1900 code in a Chevrolet indicates that the vehicle has lost communication with the Speech to Text Interface Module. This module is responsible for converting spoken words into text for various features in the vehicle, such as voice-activated controls for navigation, phone calls, and audio settings. When communication is lost with this module, it can result in the loss of functionality for these features, making it difficult for the driver to use voice commands effectively.

OBDII Code U1900 Chevrolet - Lost Communication With Speech To Text Interface Module
U1900 Chevrolet Code - Lost Communication With Speech To Text Interface Module

Common Causes of U1900 Chevrolet

  1. Faulty wiring or connections leading to the Speech to Text Interface Module
  2. Corrosion or damage to the module itself
  3. Software issues or glitches affecting communication
  4. Electrical problems within the vehicle's communication network
  5. Impact from water damage or exposure to extreme temperatures

Symptoms of U1900 Chevrolet

  1. Inability to use voice commands for navigation or audio controls
  2. Error messages related to the Speech to Text Interface Module
  3. Unresponsive or erratic behavior from the module
  4. Loss of functionality for hands-free calling features
  5. Overall decrease in convenience and ease of use for voice-activated controls

How to Fix U1900 Chevrolet

  1. Begin by checking the wiring and connections leading to the Speech to Text Interface Module for any signs of damage or corrosion. Repair or replace as necessary.
  2. Inspect the module itself for any physical damage or signs of malfunction. Replace the module if needed.
  3. Perform a software update or reset on the module to see if that resolves the communication issue.
  4. Check the vehicle's communication network for any electrical problems that may be affecting the module's functionality.
  5. Test the voice-activated controls after completing repairs to ensure that communication with the module has been restored.

Cost to Fix U1900 Chevrolet

The cost of repairing a U1900 code related to the Speech to Text Interface Module can vary depending on the extent of the issue and the specific repairs needed. In general, the replacement of the module itself can range from $200 to $500, not including labor costs. Labor rates can vary between $80 and $150 per hour, so the total repair cost could range from $300 to $800 or more. It's recommended to consult with a certified mechanic or dealership to get a more accurate estimate based on your specific vehicle and location.

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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 U1900 Chevrolet Code

1. What does the OBDII code U1900 mean on a Chevrolet?

U1900 indicates a loss of communication with the Speech to Text Interface Module on the vehicle's data network.

2. What are the common symptoms of the U1900 code on a Chevrolet?

Symptoms may include the speech-to-text feature not working, warning lights on the dashboard, and possible issues with other communication-dependent systems.

3. What causes the U1900 code to appear?

Common causes include a faulty Speech to Text Interface Module, damaged wiring or connectors, or a failure in the CAN (Controller Area Network) bus communication system.

4. Can a weak battery cause the U1900 code on a Chevrolet?

Yes, a weak or failing battery can disrupt communication on the CAN network, potentially triggering the U1900 code.

5. How can I diagnose the U1900 code on my Chevrolet?

Start by inspecting the wiring and connectors for damage, test the battery voltage, and use a scan tool to check for additional communication-related codes.

6. Is it safe to drive with the U1900 code on a Chevrolet?

While the vehicle may still drive, unresolved communication issues can affect system performance or lead to unexpected malfunctions.

7. How do I fix the U1900 code on a Chevrolet?

Repairs may include replacing the Speech to Text Interface Module, repairing damaged wiring, or addressing CAN bus communication faults.

8. Can a software update fix the U1900 code on a Chevrolet?

In some cases, a software update for the vehicle's modules may resolve the issue, especially if the problem is related to outdated or corrupted software.

9. How much does it cost to repair the U1900 code on a Chevrolet?

The cost varies depending on the issue, ranging from low-cost wiring repairs to more expensive module replacements, which can cost $200-$600 or more.

10. Can a loose connector cause the U1900 code on a Chevrolet?

Yes, a loose or corroded connector in the communication system can disrupt signals and trigger the U1900 code.

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