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Engine-Codes – Generic – U0144

U0144 Code - Lost Communication With Body Control Module 'D'

Quick Answer

The diagnostic trouble code U0144 indicates that there is a communication problem between the vehicle's engine control module (ECM) and the body control module 'D'. Common causes include Faulty wiring or connections between the ECM and body control module 'D', Defective body control module 'D', Software issues within the ECM or body control module 'D'. 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
U0144 indicates Lost Communication With Body Control Module 'D'.
Common causes
Common causes include Faulty wiring or connections between the ECM and body control module 'D', Defective body control module 'D', Software issues within the ECM or body control module 'D'.
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 12, 2024
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Code U0144 Description

The diagnostic trouble code U0144 indicates that there is a communication problem between the vehicle's engine control module (ECM) and the body control module 'D'. The body control module 'D' is responsible for controlling various functions related to the vehicle's body, such as lights, power windows, central locking, and other convenience features. When communication is lost between the ECM and the body control module 'D', it can lead to issues with the proper functioning of these systems.

OBDII Code U0144 - Lost Communication With Body Control Module 'D'
U0144 Code - Lost Communication With Body Control Module 'D'

Common Causes of U0144

  1. Faulty wiring or connections between the ECM and body control module 'D'
  2. Defective body control module 'D'
  3. Software issues within the ECM or body control module 'D'
  4. Water or moisture damage affecting the communication systems
  5. Electrical interference or electromagnetic interference disrupting communication signals

Symptoms of U0144

  1. Malfunctioning lights (e.g., headlights, taillights, interior lights)
  2. Inoperative power windows or central locking system
  3. Erratic behavior of electrical components
  4. Dashboard warning lights related to communication errors
  5. Loss of certain convenience features controlled by the body control module 'D'

How to Fix U0144

  1. Perform a thorough inspection of the wiring and connections between the ECM and body control module 'D' to check for any damage or loose connections.
  2. Use diagnostic tools to scan for any software errors or glitches within the ECM or body control module 'D' and perform necessary software updates or reprogramming.
  3. Test the body control module 'D' for any malfunctions and replace it if necessary.
  4. Address any water or moisture damage affecting the communication systems and ensure proper sealing to prevent future issues.
  5. Check for electrical interference sources and shield the communication signals to prevent disruptions.

Cost to Fix U0144

The typical repair costs for addressing the U0144 code can vary depending on the specific cause of the communication problem and the extent of the repairs required. In general, the cost of parts for replacing the body control module 'D' or repairing wiring issues can range from $200 to $600, while labor costs can add an additional $100 to $300. Overall, the total repair costs for resolving the U0144 code may amount to approximately $300 to $900, but it's important to note that these are rough estimates and actual costs can vary based on factors such as location, vehicle make and model, and labor rates at auto repair shops. It's recommended to consult with a qualified mechanic or service center for a more accurate cost estimate tailored to your specific 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.

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