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U1901 Chevrolet Code - Lost Communication With Infotainment Multifunction Switch Module

Quick Answer

The U1901 Chevrolet diagnostic trouble code (DTC) indicates that there is a communication issue with the Infotainment Multifunction Switch Module in the vehicle. Common causes include Loose or damaged wiring connections, Corrosion on connectors affecting communication, Faulty Infotainment Multifunction Switch Module. 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
U1901 Chevrolet indicates Lost Communication With Infotainment Multifunction Switch Module.
Common causes
Common causes include Loose or damaged wiring connections, Corrosion on connectors affecting communication, Faulty Infotainment Multifunction Switch Module.
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 10, 2024
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Code U1901 Chevrolet Description

The U1901 Chevrolet diagnostic trouble code (DTC) indicates that there is a communication issue with the Infotainment Multifunction Switch Module in the vehicle. This module is responsible for controlling various functions related to the infotainment system, such as audio controls, Bluetooth connectivity, and other multimedia features. When communication is lost with this module, it can lead to a loss of functionality in the infotainment system, affecting the driver's ability to access important features while driving.

OBDII Code U1901 Chevrolet - Lost Communication With Infotainment Multifunction Switch Module
U1901 Chevrolet Code - Lost Communication With Infotainment Multifunction Switch Module

Common Causes of U1901 Chevrolet

  1. Loose or damaged wiring connections
  2. Corrosion on connectors affecting communication
  3. Faulty Infotainment Multifunction Switch Module
  4. Software glitches or updates needed
  5. Electrical issues within the vehicle's system

Symptoms of U1901 Chevrolet

  1. Loss of control over audio settings or entertainment features
  2. Inability to use steering wheel controls for multimedia functions
  3. Bluetooth connectivity issues
  4. Illumination of the check engine light or other warning lights on the dashboard

How to Fix U1901 Chevrolet

  1. Begin by conducting a thorough inspection of the wiring connections and connectors related to the Infotainment Multifunction Switch Module.
  2. Check for any signs of damage or corrosion and repair or replace any affected components.
  3. If the wiring appears to be in good condition, proceed to diagnose the Infotainment Multifunction Switch Module itself for any faults.
  4. Test the module for proper functionality and consider reprogramming or replacing it if necessary.
  5. Clear the DTC from the vehicle's system and test to ensure that the communication issue has been resolved.

Cost to Fix U1901 Chevrolet

The cost of repairing a U1901 Chevrolet code can vary depending on the specific cause of the issue and the labor rates of the repair shop. In general, you can expect to pay anywhere from $200 to $500 for parts and labor to address this problem. Keep in mind that diagnostic time and labor rates can vary, so it's advisable to consult with a professional to get an accurate estimate based on your vehicle's make and model.

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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 U1901 Chevrolet Code

1. What are the common symptoms of OBDII code U1901 in a Chevrolet related to lost communication with the Infotainment Multifunction Switch Module?

- Common symptoms include a malfunctioning infotainment system, loss of control over various vehicle functions from the switch module, and warning lights on the dashboard.

2. What are the possible causes of OBDII code U1901 in a Chevrolet indicating a communication issue with the Infotainment Multifunction Switch Module?

- Possible causes include wiring issues, faulty connections, a defective switch module, or a problem with the vehicle's main computer system.

3. How can I diagnose OBDII code U1901 in a Chevrolet related to lost communication with the Infotainment Multifunction Switch Module?

- Diagnosis typically involves checking the wiring and connections leading to the switch module, testing the module itself for functionality, and using a diagnostic scanner to read the trouble codes.

4. Is it safe to continue driving with OBDII code U1901 in a Chevrolet due to lost communication with the Infotainment Multifunction Switch Module?

- It is not recommended to drive the vehicle with this code present, as it can affect the operation of important vehicle functions and potentially lead to further issues.

5. Can I repair OBDII code U1901 in a Chevrolet related to the Infotainment Multifunction Switch Module communication problem myself?

- While some basic checks like inspecting wiring and connections can be done by DIY enthusiasts, diagnosing and repairing this issue often requires specialized tools and knowledge, so it is best left to professionals.

6. How much does it typically cost to repair OBDII code U1901 in a Chevrolet caused by lost communication with the Infotainment Multifunction Switch Module?

- Repair costs can vary depending on the exact cause of the issue, but they can range from a few hundred to over a thousand dollars, including parts and labor.

7. Are there any preventive measures to avoid encountering OBDII code U1901 in a Chevrolet due to communication problems with the Infotainment Multifunction Switch Module?

- Regular vehicle maintenance, checking for any signs of wiring damage, and addressing any electrical issues promptly can help prevent this code from appearing.

8. Can resetting the vehicle's computer system clear OBDII code U1901 related to the Infotainment Multifunction Switch Module communication issue?

- Resetting the system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear once the problem resurfaces.

9. How long does it take to repair OBDII code U1901 in a Chevrolet caused by lost communication with the Infotainment Multifunction Switch Module?

- The repair time can vary depending on the exact cause and complexity of the issue, but it may take a few hours to a full day for a professional technician to diagnose and fix the problem.

10. Can a faulty Infotainment Multifunction Switch Module cause other OBDII codes to appear in a Chevrolet?

- Yes, a faulty switch module can lead to communication errors with other vehicle systems, triggering additional OBDII trouble codes beyond U1901.

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