AutoCodes – GMC – P0BB0 GMC

P0BB0 GMC 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 GMC 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 855

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

What does this mean?

What are the Possible Causes of the DTC P0BB0 GMC?

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

How to Fix the DTC P0BB0 GMC?

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 GMC 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 GMC Code

1. What are the common symptoms of OBDII code P0BB0 GMC (Hybrid/Electric Vehicle Battery 24 Circuit Low Voltage)?

- The common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential inability to start the vehicle.

2. What are the possible causes of OBDII code P0BB0 GMC (Hybrid/Electric Vehicle Battery 24 Circuit Low Voltage)?

- The code can be triggered by issues such as a faulty hybrid battery pack, damaged wiring or connectors in the battery circuit, or a malfunctioning battery management system.

3. How can I diagnose the source of OBDII code P0BB0 GMC (Hybrid/Electric Vehicle Battery 24 Circuit Low Voltage)?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific trouble code, inspecting the hybrid battery pack and its connections, and testing the voltage levels within the battery circuit.

4. What repair options are available for addressing OBDII code P0BB0 GMC (Hybrid/Electric Vehicle Battery 24 Circuit Low Voltage)?

- Repairs may involve replacing the hybrid battery pack if it is faulty, repairing or replacing damaged wiring or connectors, or recalibrating the battery management system.

5. Can I continue driving my vehicle with OBDII code P0BB0 GMC (Hybrid/Electric Vehicle Battery 24 Circuit Low Voltage)?

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

6. How can I prevent OBDII code P0BB0 GMC (Hybrid/Electric Vehicle Battery 24 Circuit Low Voltage) from occurring?

- Regular maintenance of the hybrid system, such as checking the battery connections and ensuring proper charging, can help prevent this code from appearing.

7. Is it safe to attempt DIY repairs for OBDII code P0BB0 GMC (Hybrid/Electric Vehicle Battery 24 Circuit Low Voltage)?

- Due to the complex nature of hybrid/electric vehicle systems, it is recommended to seek professional help for diagnosing and repairing this code to ensure safety and proper functionality.

8. Will resetting the OBDII code P0BB0 GMC (Hybrid/Electric Vehicle Battery 24 Circuit Low Voltage) resolve the issue?

- Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the low voltage issue in the hybrid/electric vehicle battery.

9. How long does it typically take to repair OBDII code P0BB0 GMC (Hybrid/Electric Vehicle Battery 24 Circuit Low Voltage)?

- The repair time can vary depending on the specific cause of the issue, but it may take several hours to a full day to diagnose and address the problem effectively.

10. Are there any recalls or technical service bulletins related to OBDII code P0BB0 GMC (Hybrid/Electric Vehicle Battery 24 Circuit Low Voltage)?

- It is advisable to check with the manufacturer or authorized dealerships for any recalls or technical service bulletins related to this specific OBDII code to see if there are known solutions or updates available.