AutoCodes – Chevrolet – U01B0 Chevrolet

U01B0 Chevrolet Code - Lost Communication With Battery Monitor 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 Monitor Module, Battery Monitor Module harness is open or shorted, Battery Monitor 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: U01B0 Chevrolet indicates Lost Communication With Battery Monitor Module.
Common causes: Common causes include Faulty Battery Monitor Module, Battery Monitor Module harness is open or shorted, Battery Monitor 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 10,319

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 Apr 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U01B0 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 Monitor Module has not been received.

OBDII Code U01B0 Chevrolet - Lost Communication With Battery Monitor Module - AutoCodes.com — U01B0 Chevrolet Code - Lost Communication With Battery Monitor Module

What does this mean?

What are the Possible Causes of the DTC U01B0 Chevrolet?

Faulty Battery Monitor Module
Battery Monitor Module harness is open or shorted
Battery Monitor Module circuit poor electrical connection

How to Fix the DTC U01B0 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 U01B0 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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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 U01B0 Chevrolet Code

1. What are the common symptoms of the OBDII code U01B0 in a Chevrolet indicating lost communication with the battery monitor module?

- Common symptoms include issues with the vehicle's battery charging system, irregular battery performance, and potential warning lights on the dashboard.

2. What are some possible causes of the U01B0 code in a Chevrolet related to lost communication with the battery monitor module?

- Possible causes include a faulty battery monitor module, wiring or connection issues, a drained or failing battery, or software communication errors.

3. How can I diagnose the U01B0 code in my Chevrolet when experiencing communication problems with the battery monitor module?

- Diagnosing the issue may involve checking the battery monitor module connections, inspecting the wiring for any damage, testing the battery's voltage and health, and using a diagnostic scanner to retrieve specific error codes.

4. Can I still drive my Chevrolet with the U01B0 code indicating lost communication with the battery monitor module?

- It is generally not recommended to drive the vehicle with this code present, as it may lead to potential battery issues or electrical system malfunctions.

5. What are some repair tips for addressing the U01B0 code in a Chevrolet due to lost communication with the battery monitor module?

- Repair tips may include resetting the battery monitor module, replacing faulty wiring or connectors, testing and potentially replacing the battery, or reprogramming the module if necessary.

6. Are there any safety concerns associated with the U01B0 code in a Chevrolet related to the battery monitor module communication problem?

- Safety concerns may arise from potential battery failures or unexpected electrical system malfunctions, which could impact the vehicle's performance and safety while driving.

7. How much does it typically cost to repair the U01B0 code in a Chevrolet caused by lost communication with the battery monitor module?

- Repair costs can vary depending on the specific issue, but they may range from a simple wiring repair or module reset to more complex repairs involving component replacement or reprogramming.

8. Can the U01B0 code in a Chevrolet be triggered by a simple temporary communication error with the battery monitor module?

- Yes, sometimes the U01B0 code can be triggered by a temporary communication error that may resolve itself after a system reset or battery reconnection.

9. Is it necessary to visit a dealership or mechanic to address the U01B0 code in a Chevrolet, or can it be fixed DIY?

- Depending on the severity of the issue, some simple fixes like checking connections or resetting the module can be done DIY, but more complex repairs may require professional assistance.

10. How can regular maintenance help prevent issues like the U01B0 code in a Chevrolet related to the battery monitor module?

- Regularly checking the battery's health, inspecting wiring and connections, and ensuring proper system operation can help prevent potential communication problems with the battery monitor module and related error codes.