AutoCodes – Cadillac – U0112 Cadillac

U0112 Cadillac 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 Cadillac 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 565

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

What does this mean?

What are the Possible Causes of the DTC U0112 Cadillac?

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 Cadillac?

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 Cadillac 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 Cadillac Code

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

- Common symptoms include issues with the hybrid system, loss of power, illuminated warning lights on the dashboard, and difficulties starting the vehicle.

2. What are the possible causes of OBDII code U0112 in a Cadillac?

- The code U0112 can be triggered by a faulty Battery Energy Control Module, damaged wiring or connectors, low battery voltage, or software issues.

3. How can I diagnose the reason behind OBDII code U0112 in my Cadillac?

- To diagnose the issue, it is recommended to perform a thorough inspection of the Battery Energy Control Module, check the wiring and connectors for any damage, and use a diagnostic scanner to retrieve more specific fault codes.

4. Can I continue driving my Cadillac with OBDII code U0112 present?

- It is not advisable to continue driving the vehicle with code U0112 active, as it can lead to further electrical problems or potential safety hazards. It is best to address the issue promptly.

5. What are some repair tips for fixing OBDII code U0112 in a Cadillac?

- Repair tips include checking and repairing any damaged wiring or connectors, ensuring proper battery voltage, resetting the fault codes, and, if necessary, replacing the Battery Energy Control Module.

6. Is it possible to reset OBDII code U0112 in a Cadillac without fixing the underlying issue?

- While it is possible to clear the fault code temporarily, it is crucial to address the root cause of the communication loss with the Battery Energy Control Module to prevent the code from reoccurring.

7. How much does it typically cost to repair OBDII code U0112 in a Cadillac?

- The cost of repairing code U0112 can vary depending on the exact cause of the issue. It may involve simple repairs such as fixing wiring connections or more complex solutions like replacing the Battery Energy Control Module.

8. Can a DIY enthusiast fix OBDII code U0112 in a Cadillac, or is professional assistance recommended?

- Depending on the severity of the issue, DIY enthusiasts with automotive repair experience may be able to address code U0112 by following proper diagnostic procedures. However, professional assistance is recommended for complex repairs.

9. How long does it take to repair OBDII code U0112 in a Cadillac?

- The repair time for code U0112 can vary based on the specific cause of the problem. Simple fixes like reconnecting wiring may take a short time, while replacing the Battery Energy Control Module could require more labor.

10. Are there any preventive measures to avoid OBDII code U0112 in a Cadillac in the future?

- To prevent code U0112 from occurring, regular maintenance checks, ensuring proper battery health, and promptly addressing any warning signs related to the hybrid system can help avoid communication issues with the Battery Energy Control Module.