AutoCodes – Chevrolet – P0BB5 Chevrolet

P0BB5 Chevrolet Code - Hybrid/Electric Vehicle Battery 25 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: P0BB5 Chevrolet indicates Hybrid/Electric Vehicle Battery 25 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 942

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 P0BB5 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 P0BB5 Chevrolet - Hybrid/Electric Vehicle Battery 25 Circuit Low Voltage - AutoCodes.com — P0BB5 Chevrolet Code - Hybrid/Electric Vehicle Battery 25 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0BB5 Chevrolet?

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

How to Fix the DTC P0BB5 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 P0BB5 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 P0BB5 Chevrolet Code

1. What are the common symptoms of OBDII code P0BB5 in a Chevrolet hybrid/electric vehicle?

- Common symptoms include reduced electric vehicle range, power loss, illuminated warning lights on the dashboard, and difficulty starting the vehicle.

2. What does the OBDII code P0BB5 Chevrolet Hybrid/Electric Vehicle Battery 25 Circuit Low Voltage indicate?

- This code indicates that there is low voltage detected in the circuit related to the hybrid/electric vehicle battery.

3. What are the possible causes of OBDII code P0BB5 in a Chevrolet hybrid/electric vehicle?

- Possible causes include a faulty hybrid/electric vehicle battery, damaged battery wiring, poor electrical connections, or issues with the battery management system.

4. How can I diagnose the OBDII code P0BB5 in my Chevrolet hybrid/electric vehicle?

- Diagnosis typically involves using a diagnostic scanner to retrieve the code, inspecting the battery and related wiring for any visible damage, and testing the battery voltage and connections.

5. Can I continue driving my Chevrolet hybrid/electric vehicle with the P0BB5 trouble code?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the hybrid/electric vehicle system.

6. How can I repair OBDII code P0BB5 in my Chevrolet hybrid/electric vehicle?

- Repair options may include replacing the hybrid/electric vehicle battery, repairing damaged wiring or connections, resetting the battery management system, or seeking assistance from a professional mechanic.

7. Is it safe to attempt DIY repairs for the P0BB5 code in a Chevrolet hybrid/electric vehicle?

- Due to the complexity of the hybrid/electric vehicle system, it is recommended to consult a professional mechanic or dealership for repairs related to the P0BB5 trouble code.

8. How much does it typically cost to repair OBDII code P0BB5 in a Chevrolet hybrid/electric vehicle?

- Repair costs can vary depending on the specific issue causing the code, but it is advisable to budget for potential battery replacement or extensive electrical repairs.

9. Can a weak or failing auxiliary battery cause the P0BB5 trouble code in a Chevrolet hybrid/electric vehicle?

- Yes, a weak or failing auxiliary battery can sometimes lead to low voltage issues in the hybrid/electric vehicle system, triggering the P0BB5 trouble code.

10. Are there any preventative maintenance tips to avoid encountering the P0BB5 code in a Chevrolet hybrid/electric vehicle?

- Regularly inspecting the hybrid/electric vehicle battery, keeping connections clean and secure, and following the manufacturer's recommended maintenance schedule can help prevent issues leading to the P0BB5 trouble code.