AutoCodes – Buick – U0112 Buick

U0112 Buick Code - Lost Communication With Battery Energy Control Module

Quick Answer

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy 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: U0112 Buick indicates Lost Communication With Battery Energy Control Module.
Common causes: Common causes include Faulty Battery Energy Control Module, Battery Energy Control Module harness is open or shorted, Battery Energy 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 524

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 Mar 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0112 Buick Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Battery Energy Control Module has not been received.

OBDII Code U0112 Buick - Lost Communication With Battery Energy Control Module - AutoCodes.com — U0112 Buick Code - Lost Communication With Battery Energy Control Module

What does this mean?

What are the Possible Causes of the DTC U0112 Buick?

Faulty Battery Energy Control Module
Battery Energy Control Module harness is open or shorted
Battery Energy Control Module circuit poor electrical connection

How to Fix the DTC U0112 Buick?

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 U0112 Buick 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.

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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 U0112 Buick Code

1. What are common symptoms of the OBDII code U0112 in a Buick related to lost communication with the Battery Energy Control Module?

- Common symptoms may include issues with hybrid system performance, warning lights on the dashboard, and potential drivability issues.

2. What are some possible causes of the U0112 code in a Buick?

- Possible causes include a faulty Battery Energy Control Module, damaged wiring or connectors, low battery voltage, or issues with the vehicle's communication network.

3. How can I diagnose the U0112 code in my Buick?

- Diagnosing the U0112 code typically involves using a diagnostic scanner to retrieve the code, checking for other related codes, inspecting the Battery Energy Control Module, and inspecting the wiring and connectors for any signs of damage.

4. Can I still drive my Buick with the U0112 code present?

- It is not recommended to drive your Buick with the U0112 code present, as it can affect the performance of the hybrid system and potentially lead to further issues. It's best to have the vehicle diagnosed and repaired as soon as possible.

5. What are some repair tips for fixing the U0112 code in a Buick?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the Battery Energy Control Module if necessary, ensuring proper battery voltage, and clearing the code after the repair is completed.

6. Is the U0112 code in a Buick a common issue?

- While the U0112 code related to lost communication with the Battery Energy Control Module is not as common as other codes, it can still occur in certain Buick hybrid models.

7. Can I reset the U0112 code in my Buick without fixing the underlying issue?

- While you can clear the code using a diagnostic scanner, it's important to address the underlying issue causing the U0112 code to prevent further problems with the hybrid system.

8. How much does it typically cost to repair the U0112 code in a Buick?

- The cost of repairing the U0112 code can vary depending on the specific cause of the issue, but it may involve diagnostic fees, replacement parts, and labor costs. It's best to consult a professional mechanic for an accurate estimate.

9. Are there any recalls or service bulletins related to the U0112 code in Buick vehicles?

- It's advisable to check with your local Buick dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls or service bulletins related to the U0112 code in your specific Buick model.

10. Can a DIY enthusiast fix the U0112 code in a Buick, or is it best left to a professional mechanic?

- While some DIY enthusiasts with experience in automotive repairs may be able to diagnose and fix the U0112 code, it is recommended to consult a professional mechanic, especially when dealing with complex hybrid system issues.