AutoCodes – GMC – P0B86 GMC

P0B86 GMC Code - Hybrid/Electric Vehicle Battery 16 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: P0B86 GMC indicates Hybrid/Electric Vehicle Battery 16 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.

Save to My Repairs My Repairs

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

Code Popularity 859

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 P0B86 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 P0B86 GMC - Hybrid/Electric Vehicle Battery 16 Circuit - AutoCodes.com — P0B86 GMC Code - Hybrid/Electric Vehicle Battery 16 Circuit

What does this mean?

What are the Possible Causes of the DTC P0B86 GMC?

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

How to Fix the DTC P0B86 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 P0B86 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 P0B86 GMC code?

Need more information on how to fix the P0B86 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0B86 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 P0B86 GMC Code

1. What are the common symptoms of OBDII code P0B86 GMC related to the Hybrid/Electric Vehicle Battery 16 Circuit?

- Common symptoms include reduced hybrid/electric vehicle performance, difficulty starting the vehicle, and a warning light on the dashboard indicating a battery or hybrid system issue.

2. What are the possible causes of OBDII code P0B86 GMC related to the Hybrid/Electric Vehicle Battery 16 Circuit?

- Possible causes include a faulty battery module, damaged wiring or connectors in the battery circuit, or issues with the battery management system.

3. How can I diagnose the OBDII code P0B86 GMC related to the Hybrid/Electric Vehicle Battery 16 Circuit?

- Diagnosis typically involves using a diagnostic scan tool to read the code and perform a thorough inspection of the hybrid/electric vehicle battery system, checking for any visible damage or loose connections.

4. Is it safe to continue driving with OBDII code P0B86 GMC related to the Hybrid/Electric Vehicle Battery 16 Circuit?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the hybrid/electric vehicle battery system and potentially cause performance issues or safety concerns.

5. Can I reset the OBDII code P0B86 GMC related to the Hybrid/Electric Vehicle Battery 16 Circuit on my own?

- While you can clear the code with a diagnostic scan tool, it is important to address the underlying issue causing the code to prevent it from reoccurring.

6. What are some repair tips for resolving OBDII code P0B86 GMC related to the Hybrid/Electric Vehicle Battery 16 Circuit?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing faulty battery modules, and ensuring proper connection and communication within the battery circuit.

7. How much does it typically cost to repair OBDII code P0B86 GMC related to the Hybrid/Electric Vehicle Battery 16 Circuit?

- Repair costs can vary depending on the specific issue causing the code, but they may range from a few hundred to a few thousand dollars, especially if battery module replacement is needed.

8. Can a DIY enthusiast fix OBDII code P0B86 GMC related to the Hybrid/Electric Vehicle Battery 16 Circuit?

- While some basic troubleshooting and repairs can be done by a knowledgeable DIY enthusiast, complex issues with the hybrid/electric vehicle battery system may require professional expertise.

9. How often does OBDII code P0B86 GMC related to the Hybrid/Electric Vehicle Battery 16 Circuit occur in GMC vehicles?

- This code is relatively uncommon but can occur in GMC hybrid or electric vehicles experiencing issues with the battery circuit or management system.

10. Are there any preventive maintenance measures to avoid OBDII code P0B86 GMC related to the Hybrid/Electric Vehicle Battery 16 Circuit?

- Regularly inspecting the hybrid/electric vehicle battery system, following manufacturer maintenance guidelines, and addressing any warning signs or performance issues promptly can help prevent this code from occurring.