AutoCodes – Cadillac – P1BF1 Cadillac

P1BF1 Cadillac Code - Hybrid/Electric Vehicle Battery 90 Circuit Low 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: P1BF1 Cadillac indicates Hybrid/Electric Vehicle Battery 90 Circuit Low 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 693

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 P1BF1 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 P1BF1 Cadillac - Hybrid/Electric Vehicle Battery 90 Circuit Low Voltage - AutoCodes.com — P1BF1 Cadillac Code - Hybrid/Electric Vehicle Battery 90 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BF1 Cadillac?

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

How to Fix the DTC P1BF1 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 P1BF1 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 P1BF1 Cadillac Code

1. What are the common symptoms of OBDII code P1BF1 in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include reduced vehicle performance, difficulty starting the vehicle, and possibly the illumination of the check engine light.

2. What are some possible causes of OBDII code P1BF1 indicating Hybrid/Electric Vehicle Battery 90 Circuit Low Voltage in a Cadillac?

- The code P1BF1 in a Cadillac could be caused by a faulty hybrid/electric vehicle battery, a malfunctioning battery management system, or issues with the battery charging system.

3. How can I diagnose the OBDII code P1BF1 in my Cadillac Hybrid/Electric Vehicle?

- Diagnosing the code P1BF1 typically involves using an OBDII scanner to retrieve the code, inspecting the hybrid/electric vehicle battery for any visible damage, and testing the battery's voltage levels.

4. Are there any repair tips for fixing OBDII code P1BF1 in a Cadillac Hybrid/Electric Vehicle?

- Repair tips may include checking and replacing any damaged wiring or connectors related to the hybrid/electric vehicle battery, ensuring proper connections, and potentially resetting the battery management system.

5. Can I drive my Cadillac with OBDII code P1BF1 indicating Hybrid/Electric Vehicle Battery 90 Circuit Low Voltage?

- It is not recommended to drive your Cadillac with the code P1BF1, as it may lead to further damage to the hybrid/electric vehicle battery system and affect the overall performance of the vehicle.

6. How urgent is it to address OBDII code P1BF1 in a Cadillac Hybrid/Electric Vehicle?

- It is important to address the code P1BF1 promptly to prevent potential damage to the hybrid/electric vehicle battery and ensure the proper functioning of the vehicle's electrical system.

7. Can I reset the OBDII code P1BF1 in my Cadillac Hybrid/Electric Vehicle by disconnecting the battery?

- While disconnecting the battery may reset the code temporarily, it is advisable to diagnose and address the underlying issue causing the P1BF1 code to prevent it from reoccurring.

8. Is it possible to clear the OBDII code P1BF1 in a Cadillac Hybrid/Electric Vehicle without repairing the issue?

- Clearing the code without addressing the underlying problem may result in the code reappearing and potentially causing further damage to the hybrid/electric vehicle battery system.

9. What should I do if the OBDII code P1BF1 persists in my Cadillac Hybrid/Electric Vehicle after repairs?

- If the code P1BF1 persists after repairs, it is recommended to recheck the hybrid/electric vehicle battery system, wiring connections, and consult with a professional mechanic or dealership for further diagnostics.

10. Are there any recalls or technical service bulletins related to OBDII code P1BF1 in Cadillac Hybrid/Electric Vehicles?

- It is advisable to check with the Cadillac dealership or manufacturer for any recalls or technical service bulletins related to the OBDII code P1BF1 to ensure compliance with any recommended repairs or updates.