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Engine-Codes – Generic – U0157

U0157 Code - Lost Communication With Information Center Module 'B'

Quick Answer

The diagnostic trouble code U0157 indicates that there is a communication problem between the vehicle's electronic control module (ECM) and the Information Center Module 'B'. Common causes include Loose or corroded wiring connections between the ECM and Information Center Module 'B', Faulty or damaged connectors within the communication network, Malfunctioning Information Center Module 'B'. 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
U0157 indicates Lost Communication With Information Center Module 'B'.
Common causes
Common causes include Loose or corroded wiring connections between the ECM and Information Center Module 'B', Faulty or damaged connectors within the communication network, Malfunctioning Information Center Module 'B'.
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 08, 2024
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Code U0157 Description

The diagnostic trouble code U0157 indicates that there is a communication problem between the vehicle's electronic control module (ECM) and the Information Center Module 'B'. The Information Center Module 'B' is responsible for gathering and displaying various data and information to the driver, such as vehicle diagnostics, warnings, and entertainment system controls. When communication is lost with this module, it can lead to a range of issues affecting the vehicle's performance and functionality.

OBDII Code U0157 - Lost Communication With Information Center Module 'B'
U0157 Code - Lost Communication With Information Center Module 'B'

Common Causes of U0157

  1. Loose or corroded wiring connections between the ECM and Information Center Module 'B'
  2. Faulty or damaged connectors within the communication network
  3. Malfunctioning Information Center Module 'B'
  4. Software issues affecting communication protocols
  5. Electrical system problems, such as a drained battery or alternator issues

Symptoms of U0157

  1. Check engine light illuminated on the dashboard
  2. Loss of information display on the center console
  3. Inability to access vehicle diagnostics or warnings
  4. Malfunctioning entertainment system controls
  5. Intermittent performance of the Information Center Module 'B'

How to Fix U0157

  1. Perform a thorough inspection of the wiring harness and connectors between the ECM and Information Center Module 'B'
  2. Test the communication network using a diagnostic tool to identify any faults or disruptions
  3. Replace any damaged wiring, connectors, or components causing the communication issue
  4. Update software or reprogram modules as needed to ensure proper communication
  5. Clear the trouble code from the vehicle's memory and test the functionality of the Information Center Module 'B'

Cost to Fix U0157

The typical repair costs for addressing the U0157 code can vary depending on the specific cause of the communication problem. In general, the cost of parts such as wiring, connectors, or a new Information Center Module 'B' can range from $100 to $500. Labor costs for diagnosis and repair typically range from $200 to $500, with total repair costs potentially reaching $700 to $1000 or more.

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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 U0157 Code

1. What are the common symptoms of OBDII code U0157 (Lost Communication With Information Center Module 'B')?

- Common symptoms include loss of communication with the information center module, issues with the instrument cluster, and warning lights on the dashboard.

2. What are some possible causes of OBDII code U0157?

- Possible causes include a faulty information center module, damaged wiring or connectors, a weak or dead battery, or issues with the vehicle's network communication system.

3. How can I diagnose the cause of OBDII code U0157?

- To diagnose the cause, you can use a diagnostic scan tool to check for codes and perform a thorough inspection of the information center module, wiring, connectors, and battery.

4. How can I repair OBDII code U0157?

- Repair options include repairing or replacing the information center module, repairing damaged wiring or connectors, ensuring a strong battery connection, and addressing any network communication system issues.

5. Can OBDII code U0157 cause any serious damage to my vehicle?

- While the code itself may not cause immediate serious damage, it can lead to issues with the instrument cluster and other related systems if left unresolved, affecting the overall functionality of the vehicle.

6. Is it safe to continue driving with OBDII code U0157 present?

- It is not recommended to continue driving with the code present, as it can impact the vehicle's communication systems and potentially lead to further electrical problems.

7. Can I reset OBDII code U0157 on my own?

- You may be able to clear the code temporarily by using a diagnostic scan tool to reset the system, but it is important to address the underlying cause to prevent the code from returning.

8. How much does it typically cost to repair OBDII code U0157?

- The cost of repair can vary depending on the specific cause of the code, but it may involve expenses for parts replacement, labor, and diagnostic services.

9. Are there any preventive measures to avoid OBDII code U0157 in the future?

- Regular maintenance checks, ensuring a strong battery connection, and addressing any electrical issues promptly can help prevent the recurrence of OBDII code U0157.

10. Do I need a professional mechanic to diagnose and repair OBDII code U0157?

- While some basic diagnostics can be done by the vehicle owner, it is recommended to consult a professional mechanic for a thorough diagnosis and proper repair of OBDII code U0157 to ensure the issue is adequately resolved.

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