AutoCodes – Chevrolet – P0B8B Chevrolet

P0B8B Chevrolet Code - Hybrid/Electric Vehicle Battery 17 Circuit

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: P0B8B Chevrolet indicates Hybrid/Electric Vehicle Battery 17 Circuit.
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 827

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 P0B8B 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 P0B8B Chevrolet - Hybrid/Electric Vehicle Battery 17 Circuit - AutoCodes.com — P0B8B Chevrolet Code - Hybrid/Electric Vehicle Battery 17 Circuit

What does this mean?

What are the Possible Causes of the DTC P0B8B Chevrolet?

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

How to Fix the DTC P0B8B 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 P0B8B 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 P0B8B Chevrolet Code

What does the OBDII code P0B8B indicate in a Chevrolet vehicle?

P0B8B indicates a problem with the Hybrid/Electric Vehicle Battery 17 Circuit, which can affect the overall performance of the hybrid system.

What are the common symptoms associated with the P0B8B code?

Common symptoms include reduced power, warning lights on the dashboard, and potential difficulty in starting the vehicle.

What could cause the P0B8B code to trigger?

Causes may include a faulty battery pack, issues with the battery management system, damaged wiring or connectors, or a malfunctioning hybrid control module.

How can I diagnose the issue related to the P0B8B code?

Use an OBDII scanner to read the code and any related codes, inspect the wiring and connectors for damage, and test the battery pack and management system.

Is it safe to drive a vehicle with the P0B8B code?

It is not recommended to drive a vehicle with this code, as it may lead to further damage to the hybrid system or result in a loss of power while driving.

What repair options are available for the P0B8B code?

Repair options may include replacing the hybrid battery, repairing or replacing damaged wiring, or reprogramming the hybrid control module.

Can I reset the P0B8B code myself?

While you can clear the code with an OBDII scanner, it's important to address the underlying issue to prevent the code from returning.

How much might it cost to fix the P0B8B code?

Repair costs can vary widely depending on the cause, ranging from a few hundred dollars for minor repairs to several thousand dollars for battery replacement.

What should I do if the P0B8B code keeps reappearing?

If the code keeps returning, have the vehicle inspected by a qualified technician to diagnose and fix the underlying problem effectively.