AutoCodes – Cadillac – P1BFC Cadillac

P1BFC Cadillac 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 Cadillac 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 788

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

What does this mean?

What are the Possible Causes of the DTC P1BFC Cadillac?

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

How to Fix the DTC P1BFC Cadillac?

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 Cadillac 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 Cadillac Code

What does the OBDII code P1BFC mean in a Cadillac?

The code P1BFC indicates a problem with the Hybrid/Electric Vehicle Battery 94 circuit performance, which can affect the vehicle's hybrid system functionality.

What are common symptoms of the P1BFC code?

Common symptoms include reduced power output, battery warning lights, decreased fuel efficiency, and potential issues with the vehicle starting or operating in electric mode.

What could cause the P1BFC code to trigger?

Possible causes include issues with the battery management system, faulty wiring or connectors in the battery circuit, a malfunctioning battery cell, or problems with the hybrid control module.

How can I diagnose the P1BFC code?

To diagnose the P1BFC code, use an OBDII scanner to confirm the code and check for any related codes. Inspect the battery connections, wiring, and battery health, and perform a visual inspection of the hybrid system components.

What are some common repair solutions for the P1BFC code?

Repairs may involve replacing damaged wiring, securing loose connections, replacing a faulty battery cell, or updating the hybrid control module software if applicable.

Can I drive my Cadillac with the P1BFC code?

While you may be able to drive the vehicle, it is not advisable as it can lead to reduced performance and efficiency. It is best to address the issue promptly to prevent further damage.

Is the P1BFC code specific to Cadillac vehicles?

No, while the P1BFC code may appear in Cadillac vehicles, it is part of a broader set of OBDII codes that can also affect other hybrid and electric vehicles.

How much will it cost to fix the P1BFC code?

Repair costs can vary widely based on the specific issue identified, ranging from simple wire repairs to a complete battery replacement, potentially costing anywhere from a few hundred to several thousand dollars.

Can I reset the P1BFC code after repair?

Yes, once the underlying issue is resolved, the code can be cleared using an OBDII scanner. However, it's important to ensure the problem is fixed to prevent the code from returning.