AutoCodes – Cadillac – P1BFD Cadillac

P1BFD Cadillac Code - Hybrid/Electric Vehicle Battery 94 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: P1BFD Cadillac indicates Hybrid/Electric Vehicle Battery 94 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 839

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 P1BFD 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 P1BFD Cadillac - Hybrid/Electric Vehicle Battery 94 Circuit Low Voltage - AutoCodes.com — P1BFD Cadillac Code - Hybrid/Electric Vehicle Battery 94 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BFD Cadillac?

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

How to Fix the DTC P1BFD 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 P1BFD 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 P1BFD Cadillac Code

1. What are common symptoms of OBDII code P1BFD in a Cadillac hybrid/electric vehicle?

- Common symptoms include poor fuel efficiency, reduced power output, and potential issues with starting the vehicle.

2. What does the OBDII code P1BFD indicate in a Cadillac hybrid/electric vehicle?

- This code indicates a low voltage condition in the circuit related to the hybrid/electric vehicle battery 94.

3. What are possible causes of the OBDII code P1BFD in a Cadillac hybrid/electric vehicle?

- Possible causes include a faulty battery 94, damaged wiring or connectors, or issues with the battery management system.

4. How can I diagnose the source of the OBDII code P1BFD in my Cadillac hybrid/electric vehicle?

- Diagnosing the issue may involve conducting a thorough inspection of the battery 94 components, checking the wiring for damage, and using a diagnostic scanner to gather more information.

5. What are some repair tips for resolving the OBDII code P1BFD in a Cadillac hybrid/electric vehicle?

- Repair tips may include replacing the faulty battery 94, repairing any damaged wiring or connectors, and resetting the fault codes with a diagnostic tool.

6. Is it safe to continue driving my Cadillac hybrid/electric vehicle with the OBDII code P1BFD present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage and potential safety hazards.

7. Can I reset the OBDII code P1BFD in my Cadillac hybrid/electric vehicle myself?

- You can attempt to reset the code using a diagnostic scanner, but it is important to address the underlying issue causing the code to prevent it from reoccurring.

8. How do I prevent the OBDII code P1BFD from appearing in my Cadillac hybrid/electric vehicle in the future?

- Regular maintenance and inspections of the hybrid/electric vehicle battery system, including the battery 94 components, can help prevent this code from reappearing.

9. Is the repair for the OBDII code P1BFD in a Cadillac hybrid/electric vehicle typically expensive?

- The cost of repair can vary depending on the specific issue causing the code, but it is recommended to address it promptly to prevent further damage and costly repairs.

10. Can a professional mechanic help me diagnose and repair the OBDII code P1BFD in my Cadillac hybrid/electric vehicle?

- Yes, a professional mechanic with experience in hybrid/electric vehicles can help diagnose the issue accurately and perform the necessary repairs to resolve the code.