AutoCodes – Chevrolet – P1BF2 Chevrolet

P1BF2 Chevrolet Code - Hybrid/Electric Vehicle Battery 90 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: P1BF2 Chevrolet indicates Hybrid/Electric Vehicle Battery 90 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 820

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 P1BF2 Chevrolet 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 P1BF2 Chevrolet - Hybrid/Electric Vehicle Battery 90 Circuit High Voltage - AutoCodes.com — P1BF2 Chevrolet Code - Hybrid/Electric Vehicle Battery 90 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BF2 Chevrolet?

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

How to Fix the DTC P1BF2 Chevrolet?

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 P1BF2 Chevrolet 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 P1BF2 Chevrolet Code

What does the OBDII code P1BF2 mean for my Chevrolet vehicle?

The OBDII code P1BF2 indicates that there is a high voltage condition detected in the hybrid/electric vehicle battery 90 circuit, which can lead to performance issues.

What are the common symptoms associated with the P1BF2 code?

Common symptoms include warning lights on the dashboard, reduced power or performance, and in some cases, the vehicle may enter limp mode to protect the system.

What could cause the P1BF2 code to trigger?

The code can be triggered by several issues, such as a faulty battery management system, damaged wiring or connectors, a failing battery, or issues with the inverter or converter.

Can I drive my Chevrolet if the P1BF2 code is present?

While you may be able to drive the vehicle, it is not recommended as it can lead to further damage to the hybrid system. Itâ€™s best to address the issue as soon as possible.

How can I diagnose the P1BF2 code?

To diagnose the P1BF2 code, use an OBDII scanner to confirm the code and check for related codes. Inspect the battery, wiring, and connectors for any visible damage or corrosion.

What repairs might be necessary for a P1BF2 code?

Repairs may include replacing damaged wiring or connectors, repairing or replacing the battery management system, or replacing the hybrid battery itself if itâ€™s deemed faulty.

Is there a way to reset the P1BF2 code?

The code can be reset using an OBDII scanner after repairs have been made. However, it is important to ensure the underlying issue is resolved to prevent the code from returning.

Can a low battery charge cause the P1BF2 code?

Yes, a low battery charge can contribute to the high voltage condition in the circuit, potentially triggering the P1BF2 code. Ensuring the battery is fully charged and in good condition is essential.

How much does it typically cost to repair issues related to the P1BF2 code?

Repair costs can vary widely depending on the specific issue, ranging from a few hundred dollars for minor repairs to several thousand dollars if the hybrid battery needs replacement.