AutoCodes – GMC – P0BB3 GMC

P0BB3 GMC Code - Hybrid/Electric Vehicle Battery 25 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: P0BB3 GMC indicates Hybrid/Electric Vehicle Battery 25 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 823

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 P0BB3 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 P0BB3 GMC - Hybrid/Electric Vehicle Battery 25 Circuit - AutoCodes.com — P0BB3 GMC Code - Hybrid/Electric Vehicle Battery 25 Circuit

What does this mean?

What are the Possible Causes of the DTC P0BB3 GMC?

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

How to Fix the DTC P0BB3 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 P0BB3 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 P0BB3 GMC Code

1. What are the common symptoms of OBDII code P0BB3 in a GMC Hybrid/Electric Vehicle?

- Common symptoms may include reduced hybrid system performance, decreased fuel efficiency, and illuminated warning lights on the dashboard related to the battery system.

2. What could be the possible causes of OBDII code P0BB3 in a GMC Hybrid/Electric Vehicle?

- The code P0BB3 typically indicates a fault in the Hybrid/Electric Vehicle Battery 25 Circuit, which could be caused by a damaged battery pack, faulty battery management system, or wiring issues.

3. How can I diagnose the OBDII code P0BB3 in my GMC Hybrid/Electric Vehicle?

- A thorough diagnostic scan using an OBDII scanner is recommended to pinpoint the exact location of the issue within the Hybrid/Electric Vehicle Battery 25 Circuit. Additionally, a visual inspection of the battery components and wiring may be necessary.

4. Is it safe to continue driving with OBDII code P0BB3 present in my GMC Hybrid/Electric Vehicle?

- It is not recommended to continue driving with the code P0BB3 active, as it could lead to further damage to the hybrid/electric system components. It is best to address the issue promptly to prevent potential safety hazards.

5. Can I repair OBDII code P0BB3 in my GMC Hybrid/Electric Vehicle by myself?

- While some basic troubleshooting steps like checking for loose connections or damaged wiring can be done by DIY enthusiasts, addressing complex issues related to the Hybrid/Electric Vehicle Battery 25 Circuit may require specialized knowledge and equipment, so it's advisable to consult a professional mechanic.

6. How much does it typically cost to repair OBDII code P0BB3 in a GMC Hybrid/Electric Vehicle?

- The cost of repairing OBDII code P0BB3 can vary widely depending on the exact cause of the issue, the extent of damage, and the labor rates in your area. It's best to obtain diagnostic information from a qualified mechanic to get an accurate estimate.

7. Are there any preventive maintenance tips to avoid OBDII code P0BB3 in a GMC Hybrid/Electric Vehicle?

- Regularly inspecting the battery system, following the manufacturer's maintenance schedule, and avoiding overcharging or deep discharging the battery can help prevent issues that may trigger the code P0BB3.

8. Can a faulty Hybrid/Electric Vehicle Battery 25 Circuit impact the overall performance of my GMC Hybrid vehicle?

- Yes, a fault in the Hybrid/Electric Vehicle Battery 25 Circuit can affect the performance of the hybrid system, resulting in reduced efficiency, power delivery, and overall driving experience.

9. How urgent is it to address OBDII code P0BB3 in a GMC Hybrid/Electric Vehicle?

- It is important to address OBDII code P0BB3 promptly to prevent further damage to the hybrid/electric system and ensure the safety and efficiency of the vehicle. Ignoring the code can lead to more severe issues down the line.

10. Can OBDII code P0BB3 be intermittent or permanent in a GMC Hybrid/Electric Vehicle?

- OBDII code P0BB3 can manifest as an intermittent issue, where the warning lights may come and go, depending on the driving conditions and severity of the fault. However, it is essential to address the underlying problem to prevent it from becoming a permanent and more serious issue.