AutoCodes – Chevrolet – P0BB0 Chevrolet

P0BB0 Chevrolet Code - Hybrid/Electric Vehicle Battery 24 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: P0BB0 Chevrolet indicates Hybrid/Electric Vehicle Battery 24 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 1,037

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 P0BB0 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 P0BB0 Chevrolet - Hybrid/Electric Vehicle Battery 24 Circuit Low Voltage - AutoCodes.com — P0BB0 Chevrolet Code - Hybrid/Electric Vehicle Battery 24 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0BB0 Chevrolet?

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

How to Fix the DTC P0BB0 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 P0BB0 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 P0BB0 Chevrolet Code

1. What does the OBDII code P0BB0 mean on a Chevrolet?

P0BB0 indicates a "Hybrid/Electric Vehicle Battery 24 Circuit Low Voltage," meaning the voltage in battery module 24 is below the expected range.

2. What are the symptoms of the P0BB0 code on a Chevrolet?

Common symptoms include reduced fuel economy, decreased vehicle performance, illuminated check engine light, and possible hybrid system warnings.

3. What causes the P0BB0 code to appear?

The code can be caused by a faulty battery module, corroded or damaged wiring, a defective battery management system, or a poor connection in the circuit.

4. Can I drive my Chevrolet with the P0BB0 code?

While the vehicle may still be drivable, it is not recommended as it can lead to further damage to the hybrid system or reduced performance.

5. How do mechanics diagnose the P0BB0 code?

Mechanics use a scan tool to confirm the code, inspect the battery module and wiring for damage, and test the voltage in circuit 24 to identify the issue.

6. How can I fix the P0BB0 code on my Chevrolet?

Repairs may involve replacing the faulty battery module, repairing damaged wiring, cleaning connections, or recalibrating the battery management system.

7. Is the P0BB0 code specific to Chevrolet vehicles?

No, P0BB0 can appear on other hybrid or electric vehicles, but the exact meaning and components affected may vary by manufacturer.

8. Can a low-voltage battery cause the P0BB0 code?

Yes, a low or malfunctioning hybrid battery module can trigger this code due to insufficient voltage in the affected circuit.

9. How much does it cost to fix the P0BB0 code on a Chevrolet?

Repair costs vary widely, ranging from $100 for minor wiring repairs to over $1,000 for battery module replacement, depending on the severity of the issue.

10. Can regular maintenance prevent the P0BB0 code?

Yes, regular inspections of the hybrid battery system, cleaning connections, and monitoring battery performance can help prevent issues leading to this code.