AutoCodes – GMC – P1BE9 GMC

P1BE9 GMC Code - Hybrid/Electric Vehicle Battery 87 Circuit High 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: P1BE9 GMC indicates Hybrid/Electric Vehicle Battery 87 Circuit High 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 762

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
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Code P1BE9 GMC 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 P1BE9 GMC - Hybrid/Electric Vehicle Battery 87 Circuit High Voltage - AutoCodes.com — P1BE9 GMC Code - Hybrid/Electric Vehicle Battery 87 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BE9 GMC?

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

How to Fix the DTC P1BE9 GMC?

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 P1BE9 GMC 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 P1BE9 GMC Code

1. What are the common symptoms of OBDII code P1BE9 GMC (Hybrid/Electric Vehicle Battery 87 Circuit High Voltage)?

- Common symptoms include warning lights on the dashboard, reduced hybrid system performance, and potential vehicle stalling.

2. What can cause the OBDII code P1BE9 GMC to appear?

- This code is typically caused by a malfunction in the hybrid/electric vehicle battery 87 circuit, which may be due to wiring issues, a faulty battery pack, or a problem with the battery management system.

3. How can I diagnose the root cause of OBDII code P1BE9 GMC?

- Diagnosing this code usually involves conducting a thorough inspection of the hybrid/electric vehicle battery system, checking for wiring faults, testing battery voltage, and using specialized diagnostic tools.

4. Is it safe to continue driving with the OBDII code P1BE9 GMC present?

- It is not recommended to drive the vehicle with this code active, as it can lead to further damage to the hybrid/electric vehicle system and potentially pose a safety risk.

5. What are some repair tips for addressing OBDII code P1BE9 GMC?

- Repairing this code may involve repairing or replacing damaged wiring, testing and replacing the battery pack if necessary, and resetting the system to clear the code.

6. Can I reset the OBDII code P1BE9 GMC myself?

- While you can attempt to clear the code using an OBDII scanner, it is important to address the underlying issue first to prevent the code from reappearing.

7. How much does it typically cost to repair OBDII code P1BE9 GMC?

- The cost of repairing this code can vary depending on the extent of the issue, but it may involve labor costs for diagnostics and repair, as well as the cost of any replacement parts needed.

8. Are there any preventive measures to avoid OBDII code P1BE9 GMC in the future?

- Regular maintenance of the hybrid/electric vehicle system, including checking the battery health and ensuring proper wiring connections, can help prevent this code from appearing.

9. Can a DIY enthusiast fix OBDII code P1BE9 GMC at home?

- While some basic troubleshooting steps can be taken at home, diagnosing and repairing this code may require specialized knowledge and tools, so it is often best left to professional technicians.

10. How long does it typically take to repair OBDII code P1BE9 GMC?

- The repair time for this code can vary depending on the complexity of the issue and availability of parts, but it may take a few hours to a day to diagnose and fix the problem.