AutoCodes – Cadillac – P1BF2 Cadillac

P1BF2 Cadillac Code - Hybrid/Electric Vehicle Battery 90 Circuit High 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: P1BF2 Cadillac indicates Hybrid/Electric Vehicle Battery 90 Circuit High 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 796

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 P1BF2 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 P1BF2 Cadillac - Hybrid/Electric Vehicle Battery 90 Circuit High Voltage - AutoCodes.com — P1BF2 Cadillac Code - Hybrid/Electric Vehicle Battery 90 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BF2 Cadillac?

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

How to Fix the DTC P1BF2 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 P1BF2 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 P1BF2 Cadillac Code

1. What are the common symptoms of OBDII code P1BF2 in a Cadillac hybrid/electric vehicle?

- Common symptoms include the check engine light illuminated on the dashboard, reduced hybrid system performance, and potential issues with battery charging.

2. What are the possible causes of OBDII code P1BF2 in a Cadillac hybrid/electric vehicle?

- Possible causes include a high voltage circuit fault in the hybrid/electric vehicle battery, damaged wiring or connectors, a faulty battery control module, or issues with the hybrid system components.

3. How can I diagnose and repair OBDII code P1BF2 in my Cadillac hybrid/electric vehicle?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault code and pinpointing the exact location of the high voltage circuit issue. Repair may involve repairing or replacing damaged wiring, connectors, or components in the battery system.

4. Is it safe to continue driving my Cadillac with OBDII code P1BF2 present?

- It is not recommended to continue driving the vehicle with this code present, as it can indicate potential high voltage system issues that could pose safety risks. It is best to have the vehicle inspected and repaired by a qualified technician.

5. Can I reset the OBDII code P1BF2 in my Cadillac hybrid/electric vehicle on my own?

- While you can clear the code using a diagnostic scanner, it is important to address the underlying issue causing the fault code to prevent it from reoccurring. Simply clearing the code without fixing the problem may lead to further issues down the line.

6. How much does it typically cost to repair OBDII code P1BF2 in a Cadillac hybrid/electric vehicle?

- The cost of repairs can vary depending on the exact cause of the fault code and the extent of the damage. It is recommended to consult with a professional technician for an accurate diagnosis and cost estimate.

7. Are there any preventative maintenance steps I can take to avoid OBDII code P1BF2 in my Cadillac hybrid/electric vehicle?

- Regularly inspecting the high voltage system components, keeping the battery system well-maintained, and addressing any warning signs promptly can help prevent issues that may trigger this fault code.

8. How long does it typically take to repair OBDII code P1BF2 in a Cadillac hybrid/electric vehicle?

- The repair time can vary depending on the complexity of the issue and the availability of parts. Some repairs may be completed within a few hours, while more extensive repairs could take longer.

9. Can a DIY enthusiast with automotive knowledge repair OBDII code P1BF2 in a Cadillac hybrid/electric vehicle?

- While some experienced DIY enthusiasts may be able to diagnose and repair simple electrical issues, dealing with high voltage systems in hybrid/electric vehicles requires specialized knowledge and equipment. It is recommended to seek professional help for such repairs.

10. Will OBDII code P1BF2 affect the overall performance and fuel efficiency of my Cadillac hybrid/electric vehicle?

- Yes, this fault code can impact the performance and fuel efficiency of the vehicle, as it may lead to issues with the hybrid system operation and battery management. Addressing the code promptly can help maintain the vehicle's overall efficiency.