AutoCodes – Buick – P0BAE Buick

P0BAE Buick Code - Hybrid/Electric Vehicle Battery 24 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: P0BAE Buick indicates Hybrid/Electric Vehicle Battery 24 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 914

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 P0BAE 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 P0BAE Buick - Hybrid/Electric Vehicle Battery 24 Circuit - AutoCodes.com — P0BAE Buick Code - Hybrid/Electric Vehicle Battery 24 Circuit

What does this mean?

What are the Possible Causes of the DTC P0BAE Buick?

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

How to Fix the DTC P0BAE 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 P0BAE 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 P0BAE Buick Code

1. What does OBDII code P0BAE on a Buick Hybrid/Electric Vehicle indicate?

This code P0BAE relates to the Hybrid/Electric Vehicle Battery 24 Circuit, signaling an issue with the specific circuit in the vehicle's battery system.

2. What are common symptoms of OBDII code P0BAE in a Buick Hybrid/Electric Vehicle?

Common symptoms of code P0BAE may include the illumination of the check engine light, reduced fuel efficiency, and potential issues with the vehicle's hybrid/electric powertrain.

3. What are the possible causes of OBDII code P0BAE in a Buick Hybrid/Electric Vehicle?

Causes of code P0BAE can range from faulty battery cell modules, damaged wiring in the 24 circuit, issues with the battery management system, or even a malfunctioning hybrid/electric vehicle control module.

4. How can I diagnose OBDII code P0BAE in my Buick Hybrid/Electric Vehicle?

Diagnosing code P0BAE requires using an OBDII scanner to retrieve the specific fault code, inspecting the battery system components for damage or loose connections, and potentially performing a battery system reset if needed.

5. Can I continue driving my Buick Hybrid/Electric Vehicle with OBDII code P0BAE present?

It is not recommended to continue driving with code P0BAE active, as it can lead to further damage to the vehicle's battery system and potentially affect the overall performance of the hybrid/electric powertrain.

6. How can I repair OBDII code P0BAE in my Buick Hybrid/Electric Vehicle?

Repairing code P0BAE may involve replacing damaged battery cell modules, repairing or replacing faulty wiring in the 24 circuit, resetting the battery management system, or seeking assistance from a certified technician for a thorough diagnosis and repair.

7. Are there any DIY tips for troubleshooting OBDII code P0BAE in a Buick Hybrid/Electric Vehicle?

DIY tips for troubleshooting code P0BAE include checking for loose connections in the battery system, inspecting the battery terminals for corrosion, and ensuring all battery components are securely in place.

8. How much does it typically cost to repair OBDII code P0BAE in a Buick Hybrid/Electric Vehicle?

The cost of repairing code P0BAE can vary depending on the extent of the issue, the need for replacement parts, and labor costs. It is advisable to obtain quotes from reputable repair shops or dealerships for an accurate estimate.

9. How long does it take to fix OBDII code P0BAE in a Buick Hybrid/Electric Vehicle?

The time required to fix code P0BAE can vary based on the specific diagnosis, parts availability, and complexity of the repair. In some cases, it may take a few hours to a full day to complete the repair.

10. Can OBDII code P0BAE in a Buick Hybrid/Electric Vehicle be prevented?

While some causes of code P0BAE may be unavoidable, regular maintenance of the vehicle's battery system, checking for any warning signs, and addressing issues promptly can help prevent the recurrence of this code.