AutoCodes – Buick – P1BAF Buick

P1BAF Buick Code - Hybrid/Electric Vehicle Battery 68 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: P1BAF Buick indicates Hybrid/Electric Vehicle Battery 68 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 780

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 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1BAF 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 P1BAF Buick - Hybrid/Electric Vehicle Battery 68 Circuit Low Voltage - AutoCodes.com — P1BAF Buick Code - Hybrid/Electric Vehicle Battery 68 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BAF Buick?

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

How to Fix the DTC P1BAF 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 P1BAF 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 P1BAF Buick Code

1. What are the common symptoms of OBDII code P1BAF in a Buick Hybrid/Electric Vehicle?

The common symptoms of code P1BAF typically include decreased fuel efficiency, reduced power output, and potential issues with the hybrid/electric vehicle battery's performance.

2. What can cause the Hybrid/Electric Vehicle Battery 68 Circuit Low Voltage code in a Buick?

The P1BAF code in a Buick is often triggered by issues such as a faulty hybrid/electric vehicle battery, poor electrical connections, or problems with the battery management system.

3. How serious is the P1BAF OBDII code in a Buick Hybrid/Electric Vehicle?

The P1BAF code should be addressed promptly to prevent further damage to the hybrid/electric vehicle battery and ensure optimal performance of the vehicle's powertrain system.

4. Can I continue driving my Buick with the Hybrid/Electric Vehicle Battery 68 Circuit Low Voltage code?

It is not recommended to continue driving your Buick when the P1BAF code is present, as it can lead to potential safety hazards and further damage to the hybrid/electric vehicle components.

5. How can I repair the P1BAF code in my Buick Hybrid/Electric Vehicle?

To repair the P1BAF code, it is essential to diagnose the root cause of the issue, which may involve inspecting the hybrid/electric vehicle battery, checking electrical connections, and testing the battery management system.

6. Will resetting the OBDII code P1BAF in my Buick Hybrid/Electric Vehicle solve the issue?

Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the P1BAF code. Proper diagnosis and repair are necessary for a long-term solution.

7. Can a DIY enthusiast address the Hybrid/Electric Vehicle Battery 68 Circuit Low Voltage code in a Buick?

While some basic troubleshooting steps can be performed by a knowledgeable DIY enthusiast, diagnosing and repairing the P1BAF code in a Buick often requires specialized equipment and expertise best handled by a professional technician.

8. How much does it cost to fix the OBDII code P1BAF in a Buick Hybrid/Electric Vehicle?

The cost of fixing the P1BAF code can vary depending on the root cause of the issue, the required repairs or replacements, and labor costs. It is advisable to obtain estimates from qualified mechanics or dealerships.

9. Are there any preventive maintenance tips to avoid the P1BAF code in a Buick Hybrid/Electric Vehicle?

Regularly inspecting the hybrid/electric vehicle battery, ensuring proper charging habits, and following the manufacturer's maintenance schedule can help prevent issues that may trigger the P1BAF code.

10. Is the Hybrid/Electric Vehicle Battery 68 Circuit Low Voltage code a common problem in Buick vehicles?

While the P1BAF code may not be as common as other OBDII codes, it can occur in Buick Hybrid/Electric Vehicles due to various factors affecting the battery system and electrical components.