AutoCodes – Buick – P1BA0 Buick

P1BA0 Buick Code - Hybrid/Electric Vehicle Battery 63 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: P1BA0 Buick indicates Hybrid/Electric Vehicle Battery 63 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 822

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 P1BA0 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 P1BA0 Buick - Hybrid/Electric Vehicle Battery 63 Circuit Low Voltage - AutoCodes.com — P1BA0 Buick Code - Hybrid/Electric Vehicle Battery 63 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BA0 Buick?

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

How to Fix the DTC P1BA0 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 P1BA0 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 P1BA0 Buick Code

1. What are common symptoms of OBDII code P1BA0 in a Buick Hybrid/Electric Vehicle?

- Common symptoms include reduced power, poor fuel economy, and potential drivability issues.

2. What can cause the Hybrid/Electric Vehicle Battery 63 Circuit Low Voltage code in a Buick?

- Possible causes include a faulty battery pack, damaged wiring, poor connections, or issues with the battery management system.

3. How serious is the P1BA0 code in a Buick Hybrid/Electric Vehicle?

- This code indicates a low voltage issue in the hybrid/electric battery circuit, which can impact the vehicle's performance and efficiency. It should be addressed promptly.

4. Can I continue driving my Buick with the P1BA0 code present?

- It is not recommended to continue driving with the P1BA0 code active, as it can lead to further damage to the hybrid/electric system and potentially leave you stranded.

5. How can I diagnose and repair the Hybrid/Electric Vehicle Battery 63 Circuit Low Voltage code in my Buick?

- Diagnosing and repairing this code typically requires specialized diagnostic equipment and knowledge of hybrid/electric vehicle systems. It is best handled by a qualified technician.

6. Is it safe to attempt to reset the P1BA0 code in my Buick Hybrid/Electric Vehicle?

- While you can attempt to clear the code using an OBDII scanner, it is important to address the underlying issue causing the code to prevent further problems.

7. Will disconnecting the battery reset the P1BA0 code in my Buick?

- Disconnecting the battery may clear the code temporarily, but it is not a recommended method for resolving the underlying issue causing the low voltage fault.

8. How much does it typically cost to repair the P1BA0 code in a Buick Hybrid/Electric Vehicle?

- Repair costs can vary depending on the specific cause of the fault. It is advisable to consult with a professional for an accurate diagnosis and cost estimate.

9. Can extreme weather conditions contribute to triggering the P1BA0 code in a Buick Hybrid/Electric Vehicle?

- Yes, extreme temperatures can impact the performance and health of the hybrid/electric battery system, potentially leading to low voltage faults like the P1BA0 code.

10. Are there any preventive measures I can take to avoid the P1BA0 code in my Buick Hybrid/Electric Vehicle?

- Regular maintenance, including checking the battery system, keeping connections clean, and monitoring battery health, can help prevent issues that may trigger the P1BA0 code.