AutoCodes – Chevrolet – P0BB8 Chevrolet

P0BB8 Chevrolet Code - Hybrid/Electric Vehicle Battery 26 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: P0BB8 Chevrolet indicates Hybrid/Electric Vehicle Battery 26 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 1,018

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 P0BB8 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 P0BB8 Chevrolet - Hybrid/Electric Vehicle Battery 26 Circuit - AutoCodes.com — P0BB8 Chevrolet Code - Hybrid/Electric Vehicle Battery 26 Circuit

What does this mean?

What are the Possible Causes of the DTC P0BB8 Chevrolet?

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

How to Fix the DTC P0BB8 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 P0BB8 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 P0BB8 Chevrolet Code

What does the OBDII code P0BB8 mean for my Chevrolet vehicle?

The OBDII code P0BB8 indicates a problem with the Hybrid/Electric Vehicle Battery 26 Circuit, which is part of the vehicle's hybrid or electric powertrain system.

What symptoms might indicate that my vehicle has the P0BB8 code?

Common symptoms include reduced power or acceleration, warning lights on the dashboard, unusual noises from the battery area, and decreased battery performance.

What could cause the P0BB8 code to trigger?

Causes may include a faulty battery management system, damaged wiring or connectors in the battery circuit, a failing hybrid battery, or issues with the battery cooling system.

How can I diagnose the issue associated with the P0BB8 code?

You can start by using an OBDII scanner to confirm the code, then visually inspect the battery connections and wiring for damage, and check the battery management system for any faults.

Is it safe to drive my Chevrolet with the P0BB8 code?

It is not advisable to drive the vehicle until the issue is diagnosed and repaired, as it may lead to reduced performance or further damage to the hybrid/electric system.

What repairs might be necessary to resolve the P0BB8 code?

Repairs could involve replacing damaged wiring or connectors, repairing the battery management system, or replacing the hybrid battery itself if it is found to be faulty.

How can I prevent the P0BB8 code from occurring in the future?

Regular maintenance of the hybrid/electric vehicle system, including battery inspection and ensuring proper cooling, can help prevent issues that lead to the P0BB8 code.

Can I reset the P0BB8 code after repairs?

Yes, after addressing the underlying issue, you can reset the code using an OBDII scanner. If the problem is resolved, the code should not reappear.

What should I do if the P0BB8 code keeps coming back?

If the code reappears after repairs, itâ€™s advisable to have a professional mechanic perform a thorough diagnostic to identify any underlying issues that may have been missed.