AutoCodes – BMW – U0112 BMW

U0112 BMW Code - Lost Communication With Battery Energy Control Module

Quick Answer

This fault code is stored in a control module when communication is lost or a message corrupt. 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 BMW 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 764

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 Dec 29, 2020

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

This fault code is stored in a control module when communication is lost or a message corrupt. Communication protocols have strict error handling processes for data transfer. If a module or a component that can communicate on the data bus returns a negative acknowledgment an error flag will be set and the module transmitting the erroneous data may become disconnected from the network. The affected module will go to a bus off state if the error count is greater than 256.

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

What does this mean?

What are the Possible Causes of the DTC U0112 BMW?

Faulty Battery Energy Control Module
Battery Energy Control Module harness is open or shorted
Battery Energy Control Module circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC U0112 BMW?

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 BMW 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 BMW code?

Need more information on how to fix the U0112 BMW code? Get Access to Factory Service Manuals

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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 BMW Code

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

- Common symptoms include issues with starting the vehicle, electrical problems, and the malfunction indicator light (MIL) being illuminated.

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

- The code U0112 in a BMW may be caused by a faulty Battery Energy Control Module, damaged wiring or connectors, a drained or faulty battery, or software issues.

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

- Diagnosing the U0112 code typically involves using an OBDII scanner to retrieve the specific fault code, checking the battery voltage and connections, inspecting the wiring harness for damage, and testing the Battery Energy Control Module for functionality.

4. Can I continue driving my BMW with the U0112 code present?

- It is not recommended to continue driving your BMW with the U0112 code present, as it can lead to further electrical issues and potential safety hazards. It is best to address the underlying problem promptly.

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

- Repair tips may include checking and replacing damaged wiring, repairing or replacing the Battery Energy Control Module, ensuring the battery is in good condition, and updating software if necessary.

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

- The cost of repairing the U0112 code in a BMW can vary depending on the specific issue causing the code, the required parts, and labor costs. It is advisable to consult with a professional technician for an accurate estimate.

7. Can a DIY enthusiast fix the U0112 code in a BMW?

- While some DIY enthusiasts may have the skills to diagnose and repair the U0112 code in a BMW, it is recommended to seek assistance from a qualified mechanic or technician to ensure proper diagnosis and repair.

8. Is the U0112 code a serious issue in a BMW?

- The U0112 code indicating lost communication with the Battery Energy Control Module should be addressed promptly to prevent further electrical problems and potential safety risks. Ignoring the code can lead to more significant issues over time.

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

- Simply resetting the U0112 code may temporarily turn off the MIL, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is crucial to diagnose and repair the root cause of the problem.

10. How can I prevent the U0112 code from appearing in my BMW in the future?

- Regular maintenance, such as checking the battery health, monitoring electrical components, and keeping up with software updates, can help prevent the recurrence of the U0112 code in your BMW.