AutoCodes – Generic – P1BFE

P1BFE Code - Hybrid/Electric Vehicle Battery 94 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: P1BFE indicates Hybrid/Electric Vehicle Battery 94 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 839

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 P1BFE 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 P1BFE - Hybrid/Electric Vehicle Battery 94 Circuit High Voltage - AutoCodes.com — P1BFE Code - Hybrid/Electric Vehicle Battery 94 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BFE?

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

How to Fix the DTC P1BFE?

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 P1BFE 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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Need Help with the Code?

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Information for Specific Makes

P1BFE Buick — Hybrid/Electric Vehicle Battery 94 Circuit High Voltage
P1BFE Cadillac — Hybrid/Electric Vehicle Battery 94 Circuit High Voltage
P1BFE Chevrolet — Hybrid/Electric Vehicle Battery 94 Circuit High Voltage
P1BFE GMC — Hybrid/Electric Vehicle Battery 94 Circuit High Voltage
P1BFE Saturn — Hybrid/Electric Vehicle Battery 94 Circuit High Voltage

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 P1BFE Code

1. What are the common symptoms of OBDII code P1BFE (Hybrid/Electric Vehicle Battery 94 Circuit High Voltage)?

- Common symptoms may include the hybrid/electric vehicle not starting, reduced power, or a warning light on the dashboard related to the high voltage circuit.

2. What are some possible causes of OBDII code P1BFE?

- Possible causes include a faulty high voltage battery, issues with the battery management system, damaged wiring in the high voltage circuit, or a malfunctioning battery control module.

3. How serious is OBDII code P1BFE (Hybrid/Electric Vehicle Battery 94 Circuit High Voltage)?

- This code is serious as it indicates a potential problem with the high voltage system of the hybrid/electric vehicle, which can impact its performance and safety. It is recommended to address this issue promptly.

4. Can I continue driving with OBDII code P1BFE illuminated?

- It is not recommended to continue driving with this code illuminated, as it can lead to further damage to the high voltage system of the vehicle.

5. How can I diagnose and repair OBDII code P1BFE?

- Diagnosis typically involves using a professional OBDII scanner to read the code and then conducting a thorough inspection of the high voltage battery system, including the wiring and control modules. Repair may involve replacing faulty components or repairing damaged wiring.

6. Is it safe to attempt DIY repairs for OBDII code P1BFE?

- Due to the high voltage nature of the system involved, it is recommended to seek professional assistance for diagnosing and repairing OBDII code P1BFE to ensure safety and proper handling of the high voltage components.

7. Will resetting the OBDII system clear code P1BFE?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing P1BFE is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the code.

8. How can I prevent OBDII code P1BFE from occurring in the future?

- Regular maintenance of the high voltage system, including checking the battery health and ensuring proper wiring connections, can help prevent OBDII code P1BFE from occurring in the future.

9. Can OBDII code P1BFE impact the fuel efficiency of a hybrid/electric vehicle?

- Yes, if left unresolved, OBDII code P1BFE can impact the fuel efficiency of a hybrid/electric vehicle due to potential issues with the high voltage system affecting overall performance.

10. Is it necessary to visit a dealership for OBDII code P1BFE diagnosis and repair?

- While a dealership may have specialized knowledge and tools for hybrid/electric vehicles, reputable independent automotive shops with experience in high voltage systems can also diagnose and repair OBDII code P1BFE effectively.