AutoCodes – Mercury – U019B Mercury

U019B Mercury Code - Lost Communication With Battery Charger Control Module

Quick Answer

The Powertrain Control Module (PCM) continuously monitors the Controller Area Network (CAN) for messages from the Battery Charger Control Module (BCCM). Common causes include Faulty Battery Charger Control Module (BCCM), Battery Charger Control Module harness is open or shorted, Battery Charger Control Module circuit poor electrical connection. 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 Faulty Battery Charger Control Module (BCCM), Battery Charger Control Module harness is open or shorted, Battery Charger Control Module circuit poor electrical connection.
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.

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Code Popularity 793

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U019B Mercury Description

The Powertrain Control Module (PCM) continuously monitors the Controller Area Network (CAN) for messages from the Battery Charger Control Module (BCCM). This Diagnostic Trouble Code (DTC) sets when the PCM does not receive the BCCM message within the defined amount of time.

OBDII Code U019B Mercury - Lost Communication With Battery Charger Control Module - AutoCodes.com — U019B Mercury Code - Lost Communication With Battery Charger Control Module

What does this mean?

What are the Possible Causes of the DTC U019B Mercury?

Faulty Battery Charger Control Module (BCCM)
Battery Charger Control Module harness is open or shorted
Battery Charger Control Module circuit poor electrical connection

How to Fix the DTC U019B Mercury?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U019B Mercury code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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.