Engine-Codes.com
Engine-Codes – Mercury – U019B Mercury

U019B Mercury Code - Lost Communication With Battery Charger Control Module

Quick Answer

The U019B diagnostic trouble code (DTC) for Mercury vehicles indicates that there is a communication failure between the vehicle's onboard computer system and the battery charger control module. Common causes include Wiring harness issues, Faulty battery charger control module, Malfunctioning onboard computer system. 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
U019B Mercury indicates Lost Communication With Battery Charger Control Module.
Common causes
Common causes include Wiring harness issues, Faulty battery charger control module, Malfunctioning onboard computer system.
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 13, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code U019B Mercury Description

The U019B diagnostic trouble code (DTC) for Mercury vehicles indicates that there is a communication failure between the vehicle's onboard computer system and the battery charger control module. The battery charger control module is responsible for managing the charging process of the vehicle's battery, ensuring that it receives the correct voltage and current for optimal performance. When communication is lost with this module, it can lead to a variety of issues that can affect the vehicle's overall performance and reliability.

OBDII Code U019B Mercury - Lost Communication With Battery Charger Control Module
U019B Mercury Code - Lost Communication With Battery Charger Control Module

Common Causes of U019B Mercury

  1. Wiring harness issues
  2. Faulty battery charger control module
  3. Malfunctioning onboard computer system
  4. Poor connection between components
  5. Electrical system interference or damage

Symptoms of U019B Mercury

  1. Difficulty starting the vehicle
  2. Dim or flickering lights
  3. Malfunctioning power windows or locks
  4. Erratic climate control operation
  5. Check engine light illuminated on the dashboard

How to Fix U019B Mercury

  1. Begin by conducting a thorough inspection of the wiring harness and connections between the onboard computer system and the battery charger control module.
  2. Test the battery charger control module for proper functionality and replace if necessary.
  3. Check the onboard computer system for any faults or errors and address as needed.
  4. Ensure all connections between components are secure and free of corrosion or damage.
  5. Clear the DTC from the vehicle's computer system and test to verify that the issue has been resolved.

Cost to Fix U019B Mercury

The typical repair costs for addressing a U019B DTC on a Mercury vehicle can range from $200 to $500, including parts and labor. However, it is important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops often offer lower rates. It is recommended to check with local repair shops for a more accurate estimate based on your specific circumstances.

Need more information about the U019B Mercury code?

Need more information on how to fix the U019B Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U019B Mercury code diagnosed by a professional: Find a repair shop in your area

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 U019B Mercury Code

1. What are the common symptoms of OBDII code U019B (Lost Communication With Battery Charger Control Module) in a Mercury vehicle?

- Common symptoms include issues with the battery charging system, dimming or flickering lights, and a possible decrease in fuel efficiency.

2. What are the possible causes of the U019B code in a Mercury vehicle?

- The code U019B can be triggered by a faulty battery charger control module, damaged wiring or connectors, a drained battery, or a communication error within the vehicle's network.

3. How can I diagnose the U019B code in my Mercury vehicle?

- Diagnosis typically involves using an OBDII scanner to read the code, checking the battery charger control module for any visible damage, and inspecting the wiring and connectors for loose connections or corrosion.

4. Can I still drive my Mercury vehicle with the U019B code present?

- It is not recommended to drive your vehicle with the U019B code present, as it can lead to further electrical issues or potential battery drainage.

5. How can I repair the U019B code in my Mercury vehicle?

- Repair methods may include replacing the battery charger control module, repairing damaged wiring or connectors, ensuring the battery is fully charged, and clearing the code with an OBDII scanner.

6. Is it possible to prevent the U019B code from appearing in my Mercury vehicle?

- Regular maintenance of the battery charging system, checking the battery and connections periodically, and addressing any electrical issues promptly can help prevent the U019B code from appearing.

7. Can a DIY enthusiast fix the U019B code in a Mercury vehicle?

- Depending on the level of expertise and access to tools, a DIY enthusiast may be able to address the U019B code by following repair guides and wiring diagrams, but professional help is recommended for complex issues.

8. Will resetting the U019B code make it go away permanently?

- Resetting the U019B code may clear it temporarily, but if the underlying issue is not addressed, the code is likely to reappear. It's important to diagnose and repair the root cause of the code.

9. How long does it typically take to repair the U019B code in a Mercury vehicle?

- The repair time for the U019B code can vary depending on the cause of the issue, but it may take anywhere from a few hours to a full day to diagnose and fix the problem.

10. Should I seek professional help for the U019B code in my Mercury vehicle?

- Due to the complexity of electrical systems in modern vehicles, it is advisable to seek professional help from a qualified mechanic or technician to diagnose and repair the U019B code in your Mercury vehicle.

Discuss the causes and fixes for U019B Mercury OBDII Code

Submit a New Comment

Code U019B Mercury comments

No comments found for this page.