AutoCodes – Chevrolet – P0B7E Chevrolet

P0B7E Chevrolet Code - Hybrid/Electric Vehicle Battery 14 Circuit Low Voltage

Quick Answer

The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. 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: P0B7E Chevrolet indicates Hybrid/Electric Vehicle Battery 14 Circuit Low Voltage.
Common causes: Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
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 925

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B7E Chevrolet Description

The Hybrid/Electric Vehicle battery pack contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the hybrid/EV battery pack assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 V, for a nominal system voltage of 355 V direct current. The battery cells are also grouped together into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the cowl and contains batteries 67 through to 96. Battery section two is located behind section one. It is made up of 72 cells/24 cell groups and contains batteries 43 through to 66. The transverse battery section is section number three, it is made up of the remaining 126 cells/42 cell groups and contains batteries 1 through to 42. The three battery sections are individually serviceable components.
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P0B7E Chevrolet - Hybrid/Electric Vehicle Battery 14 Circuit Low Voltage - AutoCodes.com — P0B7E Chevrolet Code - Hybrid/Electric Vehicle Battery 14 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0B7E Chevrolet?

Faulty Hybrid/Electric Vehicle Battery Pack
Faulty Hybrid/Electric Vehicle Battery Interface Control Module

How to Fix the DTC P0B7E 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 P0B7E 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 P0B7E Chevrolet Code

1. What are the common symptoms of OBDII code P0B7E in a Chevrolet hybrid/electric vehicle?

The common symptoms include decreased fuel efficiency, reduced power output, and potentially the vehicle running on gasoline only.

2. What are some possible causes of the Hybrid/Electric Vehicle Battery 14 Circuit Low Voltage code in a Chevrolet?

Possible causes include a faulty high-voltage battery, issues with the battery management system, damaged wiring, or a malfunctioning control module.

3. How serious is the P0B7E OBDII code in a Chevrolet hybrid/electric vehicle?

This code should be addressed promptly as it can lead to poor vehicle performance, reduced fuel economy, and potentially damage to the high-voltage battery system.

4. Can I continue driving my Chevrolet with the P0B7E code present?

It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the hybrid/electric system. It is best to have the issue diagnosed and repaired by a qualified technician.

5. How can I diagnose the Hybrid/Electric Vehicle Battery 14 Circuit Low Voltage code in my Chevrolet?

Diagnosis typically involves using a scan tool to read the code and then performing tests on the high-voltage battery, wiring, and control modules to pinpoint the issue.

6. Are there any DIY repair tips for addressing the P0B7E code in a Chevrolet hybrid/electric vehicle?

DIY repairs are not recommended for this code due to the high-voltage nature of the system. It is best to have a professional diagnose and repair the issue.

7. How much does it cost to repair the OBDII code P0B7E in a Chevrolet hybrid/electric vehicle?

The cost of repair can vary depending on the exact cause of the code, but it may involve replacing parts of the high-voltage battery system, which can be a significant expense.

8. Can a regular mechanic repair the P0B7E code in a Chevrolet hybrid/electric vehicle?

It is recommended to seek a mechanic or technician with experience and expertise in working with hybrid/electric vehicles to properly diagnose and repair the issue.

9. Is it safe to reset the OBDII code P0B7E in a Chevrolet without repairing the underlying issue?

Resetting the code without addressing the underlying issue can lead to the problem persisting and potentially causing further damage to the vehicle's hybrid/electric system.

10. How often does the OBDII code P0B7E occur in Chevrolet hybrid/electric vehicles?

While not extremely common, this code can occur in Chevrolet hybrid/electric vehicles that experience issues with the high-voltage battery system or related components.