AutoCodes – Buick – P1BEA Buick

P1BEA Buick Code - Hybrid/Electric Vehicle Battery 88 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: P1BEA Buick indicates Hybrid/Electric Vehicle Battery 88 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 902

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 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1BEA 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 P1BEA Buick - Hybrid/Electric Vehicle Battery 88 Circuit Performance - AutoCodes.com — P1BEA Buick Code - Hybrid/Electric Vehicle Battery 88 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BEA Buick?

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

How to Fix the DTC P1BEA 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 P1BEA 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.

Need more information about the P1BEA Buick code?

Need more information on how to fix the P1BEA Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1BEA Buick code diagnosed by a professional: Find a repair shop in your area

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 P1BEA Buick Code

1. What does the OBDII code P1BEA mean on a Buick?

P1BEA indicates a performance issue in the Hybrid/Electric Vehicle Battery 88 Circuit, often linked to the battery management system.

2. What are common symptoms of the P1BEA code in a Buick?

Symptoms may include an illuminated check engine light, reduced fuel efficiency, decreased hybrid performance, or the vehicle entering limp mode.

3. What causes the P1BEA code to appear?

Possible causes include a faulty battery module, wiring issues in the battery circuit, corrosion on connectors, or a malfunctioning battery management system.

4. Can the P1BEA code affect the drivability of my Buick?

Yes, it can lead to reduced power, limited hybrid functionality, or the vehicle operating in a restricted performance mode.

5. How do you diagnose the P1BEA code on a Buick?

A technician will use a scan tool to check for related codes, inspect the hybrid battery and wiring, and test the battery management system components.

6. Can I drive my Buick with the P1BEA code active?

Itâ€™s not recommended, as continued driving could cause further damage to the hybrid system or reduce performance significantly.

7. How much does it cost to fix the P1BEA code on a Buick?

Repairs can range from $200 to over $1,000, depending on whether the issue is with wiring, connectors, or the hybrid battery itself.

8. Can the P1BEA code be cleared without repairs?

Clearing the code without addressing the underlying issue is not a long-term solution, and the code is likely to return.

9. What should I check first if I get the P1BEA code on my Buick?

Start by inspecting the hybrid battery connections for corrosion or damage and ensure the wiring harness is intact.

10. Is the P1BEA code covered under warranty for my Buick?

This depends on your vehicleâ€™s warranty and age, but hybrid battery and electrical system issues are often covered under extended warranties for hybrid components.