AutoCodes – Generic – U019B

U019B 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 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 7,261

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

What does this mean?

What are the Possible Causes of the DTC U019B?

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?

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 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 code?

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

Need Help with the Code?

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

Information for Specific Makes

U019B Ford — Lost Communication With Battery Charger Control Module
U019B Lincoln — Lost Communication With Battery Charger Control Module
U019B Mercury — Lost Communication With Battery Charger Control Module

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 Code

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

- Common symptoms include charging system malfunctions, battery drain issues, and dashboard warning lights related to the charging system.

2. What are some possible causes of OBDII code U019B?

- Possible causes include a faulty battery charger control module, wiring issues, poor connections, or a malfunctioning powertrain control module.

3. How can I diagnose OBDII code U019B?

- Diagnosing this code typically involves checking the battery charger control module, inspecting the wiring for damage, and using a diagnostic scanner to retrieve fault codes.

4. What are the repair options for OBDII code U019B?

- Repair options may include replacing the battery charger control module, repairing damaged wiring, ensuring proper connections, or reprogramming the powertrain control module.

5. Can OBDII code U019B be fixed at home, or should I seek professional help?

- Depending on your experience and access to tools, you may be able to address this issue at home by following repair guides and using diagnostic equipment. However, seeking professional help is recommended for complex electrical issues.

6. Are there any safety precautions to consider when dealing with OBDII code U019B?

- When working on electrical components related to the charging system, always disconnect the battery and follow proper safety procedures to avoid electrical shocks or damage to the vehicle.

7. How urgent is it to address OBDII code U019B?

- While the vehicle may still be operational with this code present, it is important to address it promptly to prevent further damage to the charging system and avoid potential breakdowns.

8. Can OBDII code U019B cause any long-term damage to the vehicle?

- Ignoring this code can lead to battery issues, charging system failures, and potential damage to other electrical components over time, impacting the overall performance of the vehicle.

9. Is it possible for OBDII code U019B to reoccur after repairs have been made?

- If the root cause of the communication loss is not properly addressed during repairs, there is a possibility that the code may reoccur. It is essential to diagnose the issue accurately to prevent recurrence.

10. Can a weak or failing battery trigger OBDII code U019B?

- Yes, a weak or failing battery can sometimes trigger communication errors with the battery charger control module, leading to the appearance of OBDII code U019B.