AutoCodes – GMC – P0B9B GMC

P0B9B GMC Code - Hybrid/Electric Vehicle Battery 20 Circuit Performance

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: P0B9B GMC indicates Hybrid/Electric Vehicle Battery 20 Circuit Performance.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,122

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0B9B 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 P0B9B GMC - Hybrid/Electric Vehicle Battery 20 Circuit Performance - AutoCodes.com — P0B9B GMC Code - Hybrid/Electric Vehicle Battery 20 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0B9B GMC?

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

How to Fix the DTC P0B9B 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 P0B9B 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.

Need more information about the P0B9B GMC code?

Need more information on how to fix the P0B9B GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0B9B GMC code diagnosed by a professional: Find a repair shop in your area

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 P0B9B GMC Code

1. What are the common symptoms of OBDII code P0B9B GMC related to the Hybrid/Electric Vehicle Battery 20 Circuit Performance?

- Common symptoms include decreased hybrid battery performance, reduced fuel efficiency, and potential hybrid system malfunctions.

2. What are the possible causes of OBDII code P0B9B GMC indicating Hybrid/Electric Vehicle Battery 20 Circuit Performance issues?

- Causes may include faulty hybrid battery cells, damaged wiring or connectors in the battery circuit, or issues with the battery management system.

3. How can I diagnose the Hybrid/Electric Vehicle Battery 20 Circuit Performance problem associated with OBDII code P0B9B GMC?

- Diagnostic procedures may involve conducting a thorough inspection of the hybrid battery pack, testing individual battery cells, checking for loose or damaged wiring, and using specialized diagnostic tools.

4. Is it safe to continue driving with OBDII code P0B9B GMC triggered by Hybrid/Electric Vehicle Battery 20 Circuit Performance issues?

- It is not recommended to continue driving with this code active, as it can lead to further damage to the hybrid battery system and potentially cause safety hazards.

5. What are some repair tips for addressing OBDII code P0B9B GMC related to Hybrid/Electric Vehicle Battery 20 Circuit Performance?

- Repair tips may include replacing damaged battery cells, repairing or replacing faulty wiring or connectors, resetting the battery management system, and ensuring proper maintenance of the hybrid battery system.

6. Can a DIY enthusiast fix OBDII code P0B9B GMC associated with Hybrid/Electric Vehicle Battery 20 Circuit Performance?

- While some basic troubleshooting and maintenance tasks can be performed by DIY enthusiasts, diagnosing and repairing complex hybrid battery issues may require specialized knowledge and equipment best handled by professionals.

7. How much does it typically cost to repair OBDII code P0B9B GMC related to Hybrid/Electric Vehicle Battery 20 Circuit Performance?

- The cost of repair can vary depending on the extent of the issue, parts needed for replacement, labor costs, and whether the repair is done at a dealership or an independent repair shop. It is advisable to obtain quotes from multiple sources.

8. Are there any preventive measures to avoid triggering OBDII code P0B9B GMC due to Hybrid/Electric Vehicle Battery 20 Circuit Performance problems?

- Regularly scheduled maintenance, such as checking and maintaining the hybrid battery system, monitoring fuel efficiency, and addressing any warning signs promptly, can help prevent issues leading to this OBDII code.