AutoCodes – Buick – P0B69 Buick

P0B69 Buick Code - Hybrid/Electric Vehicle Battery 10 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: P0B69 Buick indicates Hybrid/Electric Vehicle Battery 10 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.

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Code Popularity 852

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 P0B69 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 P0B69 Buick - Hybrid/Electric Vehicle Battery 10 Circuit Performance - AutoCodes.com — P0B69 Buick Code - Hybrid/Electric Vehicle Battery 10 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0B69 Buick?

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

How to Fix the DTC P0B69 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 P0B69 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 P0B69 Buick Code

What does the OBDII code P0B69 mean for my Buick?

The code P0B69 indicates a problem with the hybrid/electric vehicle battery, specifically related to the performance of the 10 circuit within the battery system.

What are common symptoms of the P0B69 code?

Common symptoms include reduced fuel efficiency, warning lights on the dashboard (such as the check engine light), and diminished power or acceleration in hybrid mode.

What can cause the P0B69 code to be triggered?

Possible causes include issues with the battery management system, faulty battery cells, poor connections in the battery circuit, or a malfunctioning battery control module.

How serious is the P0B69 code?

The P0B69 code is serious as it indicates a problem with the hybrid battery system, which can affect vehicle performance and safety. It is advisable to address it promptly.

Can I drive my Buick with the P0B69 code?

While it might be possible to drive the vehicle, it is not recommended as it can lead to further damage to the hybrid system. It's best to have the issue diagnosed and repaired as soon as possible.

What are some potential repairs for the P0B69 code?

Repairs may include inspecting and tightening battery connections, replacing faulty battery cells, updating the vehicleâ€™s software, or replacing the battery control module if necessary.

Is it possible to reset the P0B69 code after repairs?

Yes, after performing the necessary repairs, the code can be reset using an OBDII scanner. However, if the underlying issue is not resolved, the code may reappear.

How much will it cost to fix the P0B69 code?

Repair costs can vary widely based on the specific issue, ranging from a few hundred dollars for minor repairs to several thousand dollars if a battery replacement is needed.

Can I diagnose the P0B69 code myself?

While you can use an OBDII scanner to read the code, diagnosing the exact issue often requires specialized knowledge and tools. It's best to consult a professional technician for accurate diagnosis and repair.