AutoCodes – Buick – P0B68 Buick

P0B68 Buick Code - Hybrid/Electric Vehicle Battery 10 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: P0B68 Buick indicates Hybrid/Electric Vehicle Battery 10 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 1,082

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 P0B68 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 P0B68 Buick - Hybrid/Electric Vehicle Battery 10 Circuit - AutoCodes.com — P0B68 Buick Code - Hybrid/Electric Vehicle Battery 10 Circuit

What does this mean?

What are the Possible Causes of the DTC P0B68 Buick?

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

How to Fix the DTC P0B68 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 P0B68 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 P0B68 Buick Code

1. What are common symptoms of the OBDII code P0B68 in a Buick Hybrid/Electric Vehicle?

- Common symptoms include the check engine light illuminated, reduced hybrid system performance, and potential issues with the vehicle's battery.

2. What are the possible causes of the OBDII code P0B68 in a Buick Hybrid/Electric Vehicle?

- Possible causes include a faulty battery 10 circuit, wiring issues, poor electrical connections, or a malfunctioning battery control module.

3. How can I diagnose the OBDII code P0B68 in my Buick Hybrid/Electric Vehicle?

- Diagnosis involves using an OBDII scanner to retrieve the specific fault code, inspecting the battery 10 circuit and related components, and checking for any visible damage.

4. Is it safe to continue driving with the OBDII code P0B68 present in my Buick Hybrid/Electric Vehicle?

- It is not recommended to drive with this code present, as it can lead to further damage to the hybrid system or compromise the vehicle's performance and safety.

5. How can I repair the OBDII code P0B68 in my Buick Hybrid/Electric Vehicle?

- Repairing this code may involve repairing or replacing the battery 10 circuit, addressing any wiring or connection issues, or resetting the battery control module.

6. Can I reset the OBDII code P0B68 in my Buick Hybrid/Electric Vehicle myself?

- While you can attempt to clear the code with an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

7. What are some tips for preventing the OBDII code P0B68 in my Buick Hybrid/Electric Vehicle?

- Regularly inspect and maintain the hybrid system components, ensure proper battery care, and address any electrical issues promptly to prevent this code from appearing.

8. How much does it typically cost to repair the OBDII code P0B68 in a Buick Hybrid/Electric Vehicle?

- The cost of repair can vary depending on the specific issue causing the code, but it may range from a few hundred to a few thousand dollars, including parts and labor.

9. Can a faulty battery 10 circuit cause other OBDII codes to appear in a Buick Hybrid/Electric Vehicle?

- Yes, a faulty battery 10 circuit can cause other related codes to appear, such as P0B69 or P0B6A, indicating different issues with the hybrid/electric system.

10. Is the OBDII code P0B68 specific to Buick Hybrid/Electric Vehicles, or can it occur in other vehicle makes?

- This code is specific to hybrid/electric vehicles, particularly in Buick models, related to issues with the battery 10 circuit in the hybrid system.