AutoCodes – Cadillac – P1BF3 Cadillac

P1BF3 Cadillac Code - Hybrid/Electric Vehicle Battery 91 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: P1BF3 Cadillac indicates Hybrid/Electric Vehicle Battery 91 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 847

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 P1BF3 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 P1BF3 Cadillac - Hybrid/Electric Vehicle Battery 91 Circuit Performance - AutoCodes.com — P1BF3 Cadillac Code - Hybrid/Electric Vehicle Battery 91 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BF3 Cadillac?

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

How to Fix the DTC P1BF3 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 P1BF3 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 P1BF3 Cadillac Code

1. What are the common symptoms of OBDII code P1BF3 in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include reduced fuel efficiency, loss of power, and the vehicle may go into a reduced power or limp mode.

2. What can cause the OBDII code P1BF3 in a Cadillac Hybrid/Electric Vehicle?

- This code is typically triggered by issues with the hybrid/electric vehicle battery 91 circuit, such as wiring problems, a faulty battery cell, or a malfunctioning battery management system.

3. How can I diagnose the OBDII code P1BF3 in my Cadillac Hybrid/Electric Vehicle?

- Diagnosing this code usually involves using a diagnostic scanner to retrieve the code and then inspecting the battery 91 circuit components for any visible damage or irregularities.

4. Is it safe to continue driving with the OBDII code P1BF3 present in my Cadillac Hybrid/Electric Vehicle?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the hybrid/electric vehicle battery system and potentially cause safety issues.

5. What are some repair tips for fixing the OBDII code P1BF3 in a Cadillac Hybrid/Electric Vehicle?

- Repairing this code may involve checking and repairing any damaged wiring, replacing faulty battery cells, or recalibrating the battery management system.

6. Can I reset the OBDII code P1BF3 in my Cadillac Hybrid/Electric Vehicle using a simple OBDII scanner?

- While you can reset the code with an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

7. How much does it typically cost to repair the OBDII code P1BF3 in a Cadillac Hybrid/Electric Vehicle?

- Repair costs can vary depending on the specific issue causing the code, but it is advisable to consult a professional technician for an accurate diagnosis and cost estimate.

8. Are there any preventive maintenance steps I can take to avoid triggering the OBDII code P1BF3 in my Cadillac Hybrid/Electric Vehicle?

- Regularly inspecting the hybrid/electric vehicle battery system, ensuring proper charging habits, and following the manufacturer's maintenance schedule can help prevent issues leading to this code.

9. Can a DIY enthusiast with basic automotive knowledge attempt to fix the OBDII code P1BF3 in a Cadillac Hybrid/Electric Vehicle?

- While some basic troubleshooting steps can be taken, diagnosing and repairing issues related to the hybrid/electric vehicle battery system may require specialized knowledge and tools, so it is best to consult a professional.

10. How long does it typically take to repair the OBDII code P1BF3 in a Cadillac Hybrid/Electric Vehicle?

- The repair time can vary depending on the complexity of the issue causing the code, availability of parts, and the technician's experience, so it is advisable to consult with a professional for an accurate timeframe.