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Engine-Codes – GMC – U0112 GMC

U0112 GMC Code - Lost Communication With Battery Energy Control Module

Quick Answer

The U0112 diagnostic trouble code (DTC) for GMC vehicles indicates that there is a communication problem between the vehicle's onboard computer system and the Battery Energy Control Module (BECM). Common causes include Faulty wiring or connectors between the vehicle's computer system and the BECM, A malfunctioning BECM, Software glitches in the vehicle's 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
U0112 GMC indicates Lost Communication With Battery Energy Control Module.
Common causes
Common causes include Faulty wiring or connectors between the vehicle's computer system and the BECM, A malfunctioning BECM, Software glitches in the vehicle's 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 12, 2024
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Code U0112 GMC Description

The U0112 diagnostic trouble code (DTC) for GMC vehicles indicates that there is a communication problem between the vehicle's onboard computer system and the Battery Energy Control Module (BECM). The BECM is responsible for managing the battery system in hybrid or electric vehicles, controlling the charging process, monitoring battery health, and regulating power distribution to various components. When communication is lost with the BECM, it can lead to various issues affecting the vehicle's performance and functionality.

OBDII Code U0112 GMC - Lost Communication With Battery Energy Control Module
U0112 GMC Code - Lost Communication With Battery Energy Control Module

Common Causes of U0112 GMC

  1. Faulty wiring or connectors between the vehicle's computer system and the BECM
  2. A malfunctioning BECM
  3. Software glitches in the vehicle's computer system
  4. Water or moisture intrusion in the wiring harness
  5. Physical damage to the wiring or connectors from accidents or wear and tear

Symptoms of U0112 GMC

  1. Reduced fuel efficiency
  2. Loss of power or acceleration
  3. Difficulty starting the vehicle
  4. Warning lights related to the battery system or communication issues
  5. Inability to switch between driving modes in hybrid vehicles

How to Fix U0112 GMC

  1. Diagnose the specific cause of the communication failure using a diagnostic scanner to retrieve the DTC and perform a thorough inspection of the wiring and connectors.
  2. Repair or replace any damaged wiring or connectors found during the inspection.
  3. Test the communication between the vehicle's computer system and the BECM to ensure proper functionality.
  4. If the BECM is found to be faulty, replace it with a new or remanufactured unit as needed.
  5. Clear the DTC from the vehicle's computer system and perform a final test drive to confirm that the issue has been resolved.

Cost to Fix U0112 GMC

The typical repair costs for addressing a U0112 DTC can vary depending on the specific cause of the communication failure and the extent of the repairs needed. In general, the cost for parts such as wiring harnesses, connectors, or a new BECM can range from $200 to $800. Labor costs can add an additional $100 to $300, bringing the total repair estimate to approximately $300 to $1100. It's important to note that these costs are rough estimates, and actual repair expenses may vary based on factors such as the vehicle's make and model, the location of the repair shop, and the technician's hourly rates. Be sure to consult with a qualified mechanic or dealership for a more accurate cost estimate based on your specific situation.

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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.

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