AutoCodes – Generic – P1BFC

P1BFC Code - Hybrid/Electric Vehicle Battery 94 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: P1BFC indicates Hybrid/Electric Vehicle Battery 94 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.

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Code Popularity 942

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 P1BFC 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 P1BFC - Hybrid/Electric Vehicle Battery 94 Circuit Performance - AutoCodes.com — P1BFC Code - Hybrid/Electric Vehicle Battery 94 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BFC?

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

How to Fix the DTC P1BFC?

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 P1BFC 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 P1BFC code?

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Need Help with the Code?

Get the P1BFC code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1BFC Buick — Hybrid/Electric Vehicle Battery 94 Circuit Performance
P1BFC Cadillac — Hybrid/Electric Vehicle Battery 94 Circuit Performance
P1BFC Chevrolet — Hybrid/Electric Vehicle Battery 94 Circuit Performance
P1BFC GMC — Hybrid/Electric Vehicle Battery 94 Circuit Performance
P1BFC Saturn — Hybrid/Electric Vehicle Battery 94 Circuit Performance

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 P1BFC Code

1. What are the common symptoms of OBDII code P1BFC (Hybrid/Electric Vehicle Battery 94 Circuit Performance)?

- Common symptoms include reduced battery performance, poor fuel efficiency, and potential issues with the electric motor.

2. What are the possible causes of OBDII code P1BFC?

- The code P1BFC can be triggered by issues such as a faulty battery pack, damaged wiring, or problems with the battery management system.

3. How can I diagnose the OBDII code P1BFC?

- Diagnosis typically involves using a scan tool to read the code, checking the battery pack and related components for physical damage, and inspecting the wiring for any signs of wear or corrosion.

4. Can I still drive my hybrid or electric vehicle with the OBDII code P1BFC present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the battery system and affect the overall performance of the vehicle.

5. How can I repair OBDII code P1BFC on my hybrid or electric vehicle?

- Repairing this code may involve replacing the battery pack, repairing or replacing damaged wiring, or recalibrating the battery management system. It is recommended to seek professional help for proper diagnosis and repair.

6. Is it safe to attempt repairing OBDII code P1BFC on my own?

- Due to the complexity of hybrid and electric vehicle systems, it is recommended to seek assistance from a qualified technician or dealership to properly diagnose and repair the issue.

7. What are the long-term effects of ignoring OBDII code P1BFC?

- Ignoring this code can lead to further deterioration of the battery system, potentially causing more expensive repairs down the line and compromising the overall performance and efficiency of the vehicle.

8. Can extreme weather conditions contribute to triggering OBDII code P1BFC?

- Yes, extreme temperatures can impact the performance of hybrid and electric vehicle batteries, potentially leading to issues that trigger the P1BFC code.

9. Are there any preventive maintenance tips to avoid OBDII code P1BFC in hybrid or electric vehicles?

- Regularly checking and maintaining the battery system, following manufacturer recommendations for charging and usage, and avoiding extreme temperature exposure can help prevent issues that trigger the P1BFC code.

10. How long does it typically take to repair OBDII code P1BFC in a hybrid or electric vehicle?

- The repair time can vary depending on the exact cause of the issue, availability of parts, and the complexity of the repair. It is best to consult with a professional technician for an accurate estimate.