AutoCodes – GMC – P1BFC GMC

P1BFC GMC 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 GMC 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 819

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

What does this mean?

What are the Possible Causes of the DTC P1BFC GMC?

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

How to Fix the DTC P1BFC 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 P1BFC 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 P1BFC GMC Code

1. What are the common symptoms of OBDII code P1BFC in a GMC Hybrid/Electric Vehicle?

- Common symptoms include reduced electric range, decreased performance, and potential issues with the battery system.

2. What can cause the OBDII code P1BFC to trigger in a GMC Hybrid/Electric Vehicle?

- The code P1BFC typically indicates a performance issue with the Hybrid/Electric Vehicle Battery 94 Circuit, which can be caused by battery degradation, wiring faults, or a faulty battery control module.

3. How serious is the OBDII code P1BFC in a GMC Hybrid/Electric Vehicle?

- The code P1BFC should be addressed promptly to prevent further damage to the battery system and ensure optimal vehicle performance and efficiency.

4. Can I continue driving my GMC Hybrid/Electric Vehicle with the OBDII code P1BFC present?

- It is not recommended to continue driving the vehicle with the code P1BFC active, as it may lead to additional problems and potential safety hazards.

5. How can I diagnose and repair the OBDII code P1BFC in my GMC Hybrid/Electric Vehicle?

- Diagnosis typically involves inspecting the hybrid/electric battery system, checking for wiring issues, and testing the battery control module. Repair may involve replacing faulty components or reprogramming the control module.

6. Are there any DIY tips for addressing the OBDII code P1BFC in a GMC Hybrid/Electric Vehicle?

- DIY tips include checking for loose or corroded battery connections, ensuring proper battery cooling, and monitoring the battery health regularly.

7. Is it necessary to take my GMC Hybrid/Electric Vehicle to a dealership for OBDII code P1BFC repairs?

- While a dealership may have specialized expertise, an experienced hybrid/electric vehicle technician at an independent repair shop can also diagnose and repair the code P1BFC effectively.

8. Can resetting the OBDII code P1BFC in a GMC Hybrid/Electric Vehicle solve the issue temporarily?

- Resetting the code may temporarily clear the warning light, but it is crucial to address the underlying problem causing the code to prevent further issues.

9. How often should I have the hybrid/electric battery system inspected to prevent the OBDII code P1BFC from occurring?

- Regular maintenance schedules for hybrid/electric vehicles recommend inspecting the battery system at least once a year to catch any potential issues early.

10. Are there any recalls or technical service bulletins related to the OBDII code P1BFC in GMC Hybrid/Electric Vehicles?

- It is advisable to check with GMC or authorized service centers for any recalls or technical service bulletins related to the OBDII code P1BFC to ensure compliance with any manufacturer recommendations.