AutoCodes – Chevrolet – P0B7F Chevrolet

P0B7F Chevrolet Code - Hybrid/Electric Vehicle Battery 14 Circuit High 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: P0B7F Chevrolet indicates Hybrid/Electric Vehicle Battery 14 Circuit High 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 988

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 P0B7F 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 P0B7F Chevrolet - Hybrid/Electric Vehicle Battery 14 Circuit High Voltage - AutoCodes.com — P0B7F Chevrolet Code - Hybrid/Electric Vehicle Battery 14 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B7F Chevrolet?

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

How to Fix the DTC P0B7F 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 P0B7F 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 P0B7F Chevrolet Code

What does the OBDII code P0B7F mean for a Chevrolet vehicle?

The OBDII code P0B7F indicates a problem with the high voltage circuit of the hybrid or electric vehicle battery, specifically related to the 14 circuit.

What are common symptoms of the P0B7F code?

Common symptoms may include the hybrid or electric vehicle not starting, reduced power during acceleration, warning lights on the dashboard, or a general loss of battery performance.

What could cause the P0B7F code to trigger?

Causes can include a faulty battery management system, damaged wiring or connectors in the high voltage circuit, a malfunctioning battery pack, or issues with the hybrid control module.

How can I diagnose the P0B7F code?

To diagnose the P0B7F code, use an OBDII scanner to confirm the code, inspect the high voltage wiring and connectors for damage, and check the battery management system for any faults.

What repairs are needed for the P0B7F code?

Repairs may involve replacing damaged wiring or connectors, fixing or replacing the battery management system, or servicing the hybrid battery pack if it is malfunctioning.

Is it safe to drive a vehicle with the P0B7F code?

It is generally not safe to drive a vehicle with the P0B7F code as it can indicate serious issues with the high voltage system, which could lead to further damage or safety hazards.

Can I clear the P0B7F code without fixing the problem?

While you can clear the code, it is not recommended as the underlying issue will likely cause the code to reappear and could lead to further damage if not addressed.

How much does it typically cost to repair the P0B7F code?

Repair costs can vary widely depending on the specific issue, ranging from a few hundred dollars for wiring repairs to several thousand dollars if the battery pack needs replacement.

Should I consult a professional for the P0B7F code?

Yes, it is advisable to consult a professional mechanic or technician experienced with hybrid or electric vehicles, as they can accurately diagnose and repair the issue safely.