AutoCodes – GMC – U0112 GMC

U0112 GMC 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 GMC 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 701

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

What does this mean?

What are the Possible Causes of the DTC U0112 GMC?

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 GMC?

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 GMC 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 U0112 GMC code?

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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 GMC Code

1. What are the common symptoms of OBDII code U0112 in a GMC vehicle?

- Common symptoms include issues with starting the vehicle, loss of power, and warning lights on the dashboard related to the battery or electrical system.

2. What can cause the OBDII code U0112 (Lost Communication With Battery Energy Control Module) in a GMC?

- Possible causes include a faulty battery energy control module, damaged wiring or connectors, low battery voltage, or issues with the vehicle's network communication system.

3. How can I diagnose the OBDII code U0112 in my GMC vehicle?

- Diagnosing this code typically involves using a professional OBDII scanner to retrieve the code and checking for any related codes or freeze frame data. Additionally, inspecting the battery energy control module and related wiring can help pinpoint the issue.

4. Is it safe to continue driving my GMC with the U0112 code present?

- It is not recommended to continue driving your vehicle with the U0112 code as it may lead to further electrical issues or potential safety hazards. It's best to address the problem promptly.

5. Can I repair the OBDII code U0112 in my GMC myself?

- Depending on your skill level and access to tools, you may be able to address the U0112 code yourself by checking and repairing any damaged wiring or connectors related to the battery energy control module. However, more complex issues may require professional assistance.

6. How much does it typically cost to repair the U0112 code in a GMC?

- The cost of repairing the U0112 code can vary depending on the underlying cause of the issue, the parts needed for replacement, and labor costs. It's advisable to get a diagnosis from a mechanic to determine the exact cost.

7. Can a weak battery trigger the U0112 code in a GMC?

- Yes, a weak or failing battery can potentially trigger the U0112 code as it may lead to communication issues with the battery energy control module. Ensuring your battery is in good condition is important for proper vehicle function.

8. Will resetting the OBDII code U0112 make it go away permanently?

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

9. How long does it typically take to repair the U0112 code in a GMC?

- The repair time for the U0112 code can vary depending on the complexity of the issue and the availability of parts. Some repairs may be completed within a few hours, while others may take longer if extensive diagnostics or replacements are required.

10. Can the U0112 code in a GMC impact the vehicle's fuel efficiency?

- Yes, unresolved issues related to the U0112 code can potentially impact the vehicle's fuel efficiency as it may lead to improper battery management and electrical system operation. Addressing the code promptly can help maintain optimal fuel economy.