AutoCodes – Chevrolet – U0111 Chevrolet

U0111 Chevrolet 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: U0111 Chevrolet 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 1,043

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 U0111 Chevrolet 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 U0111 Chevrolet - Lost Communication With Battery Energy Control Module - AutoCodes.com — U0111 Chevrolet Code - Lost Communication With Battery Energy Control Module

What does this mean?

What are the Possible Causes of the DTC U0111 Chevrolet?

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 U0111 Chevrolet?

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 U0111 Chevrolet 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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Need more information on how to fix the U0111 Chevrolet 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 U0111 Chevrolet Code

1. What does the OBDII code U0111 Chevrolet indicate?

The U0111 code signifies a communication problem between the vehicle's onboard computer and the Battery Energy Control Module (BECM).

2. What are the common symptoms of U0111 code in a Chevrolet?

Common symptoms include issues with starting the vehicle, reduced fuel efficiency, warning lights on the dashboard, and possible loss of communication with other vehicle modules.

3. What are the potential causes of the U0111 code in a Chevrolet?

Possible causes include a faulty BECM, wiring or connection issues between the BECM and the vehicle's computer, a drained or weak battery, or software glitches.

4. How can I diagnose the U0111 code in my Chevrolet?

Diagnosis typically involves using a diagnostic scanner to read the trouble codes stored in the vehicle's computer and conducting a thorough inspection of the BECM, wiring, and connections for any visible damage.

5. Can I still drive my Chevrolet with the U0111 code present?

While it is possible to drive the vehicle with the U0111 code, it is not recommended as it can lead to further electrical issues and potential drivability problems. It is best to address the underlying cause promptly.

6. How can I repair the U0111 code in my Chevrolet?

Repairing the U0111 code often involves fixing any wiring or connection issues, replacing the BECM if necessary, ensuring the battery is in good condition, and performing any software updates recommended by the manufacturer.

7. Can I reset the U0111 code in my Chevrolet by disconnecting the battery?

Disconnecting the battery may temporarily clear the code, but it is not a recommended long-term solution. It is essential to address the root cause of the communication problem to prevent the code from reoccurring.

8. Is the U0111 code specific to Chevrolet vehicles only?

While the U0111 code is commonly associated with Chevrolet vehicles, it can also be found in other makes and models that use similar communication systems with a Battery Energy Control Module.

9. How much does it typically cost to repair the U0111 code in a Chevrolet?

The cost of repairing the U0111 code can vary depending on the underlying issue, parts needed for replacement, labor costs, and dealership or repair shop rates. It is advisable to obtain multiple quotes for an accurate estimate.

10. Can a DIY enthusiast fix the U0111 code in a Chevrolet?

While some simple tasks like checking connections or fuses can be done by a DIY enthusiast, diagnosing and repairing complex electrical issues related to the U0111 code may require professional expertise and specialized tools.