AutoCodes – Buick – P0B6F Buick

P0B6F Buick Code - Hybrid/Electric Vehicle Battery 11 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: P0B6F Buick indicates Hybrid/Electric Vehicle Battery 11 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 961

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 P0B6F Buick 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 P0B6F Buick - Hybrid/Electric Vehicle Battery 11 Circuit Low Voltage - AutoCodes.com — P0B6F Buick Code - Hybrid/Electric Vehicle Battery 11 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0B6F Buick?

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

How to Fix the DTC P0B6F Buick?

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 P0B6F Buick 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 P0B6F Buick Code

1. What does the OBDII code P0B6F mean in a Buick?

The P0B6F code indicates a "Hybrid/Electric Vehicle Battery 11 Circuit Low Voltage," meaning the voltage in battery module 11 is below the expected range.

2. What are the common symptoms of code P0B6F in a Buick?

Symptoms may include reduced fuel efficiency, limited hybrid/electric performance, a check engine light, or warning messages related to the hybrid system.

3. What causes the P0B6F code to appear in a Buick?

Common causes include a failing battery module, damaged wiring or connectors in the battery circuit, or issues with the battery control module.

4. Can I drive my Buick with the P0B6F code active?

Driving with this code is not recommended, as it may lead to reduced performance or further damage to the hybrid system.

5. How do I diagnose the P0B6F code in my Buick?

Diagnosis involves checking the voltage levels of battery module 11, inspecting wiring and connectors, and performing tests on the battery control module.

6. How is the P0B6F code typically repaired in a Buick?

Repairs may include replacing the faulty battery module, repairing damaged wiring or connectors, or reprogramming or replacing the battery control module.

7. Is the P0B6F code exclusive to hybrid or electric Buicks?

Yes, this code is specific to hybrid or electric vehicles, as it relates to the voltage levels in a particular battery module.

8. What tools are needed to troubleshoot the P0B6F code?

Required tools may include a professional OBDII scanner, a multimeter for voltage testing, and access to the vehicleâ€™s wiring diagrams.

9. How much does it cost to fix the P0B6F code in a Buick?

Costs vary depending on the issue, ranging from a few hundred dollars for wiring repairs to over $1,000 if the battery module needs replacement.

10. Can a low 12V battery cause the P0B6F code in a Buick?

While the 12V battery is separate, a low or failing 12V battery can sometimes affect the hybrid system's performance and should be checked as part of the diagnosis.