AutoCodes – Cadillac – P1BFA Cadillac

P1BFA Cadillac Code - Hybrid/Electric Vehicle Battery 93 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: P1BFA Cadillac indicates Hybrid/Electric Vehicle Battery 93 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 835

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1BFA 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 P1BFA Cadillac - Hybrid/Electric Vehicle Battery 93 Circuit Low Voltage - AutoCodes.com — P1BFA Cadillac Code - Hybrid/Electric Vehicle Battery 93 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BFA Cadillac?

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

How to Fix the DTC P1BFA 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 P1BFA 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.

Need more information about the P1BFA Cadillac code?

Need more information on how to fix the P1BFA Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1BFA Cadillac code diagnosed by a professional: Find a repair shop in your area

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 P1BFA Cadillac Code

What does OBDII code P1BFA mean for a Cadillac?

Code P1BFA indicates a low voltage issue in the Hybrid/Electric Vehicle Battery 93 Circuit, which is part of the vehicle's battery management system.

What are common symptoms of code P1BFA?

Symptoms may include a check engine light, reduced hybrid battery performance, decreased fuel efficiency, or the vehicle operating in reduced power mode.

What causes code P1BFA in a Cadillac?

Potential causes include a faulty battery cell, damaged wiring or connectors, a malfunctioning battery control module, or poor electrical connections in the circuit.

Can driving with code P1BFA damage my Cadillac?

Driving with P1BFA can lead to further battery or electrical system damage and may decrease vehicle performance. Addressing the issue promptly is recommended.

How is code P1BFA diagnosed?

Technicians typically use an OBDII scanner to confirm the code, inspect the battery and related wiring, and perform voltage tests to identify the fault.

Can I fix code P1BFA myself?

Unless you have experience with hybrid or electric vehicles, it's best to consult a qualified technician due to the complexity and high-voltage components involved.

How much does it cost to repair code P1BFA?

Repair costs vary depending on the cause, ranging from $100 for minor wiring fixes to over $1,000 if the hybrid battery needs replacement.

Does code P1BFA affect all Cadillac hybrid/electric models?

This code is specific to Cadillac hybrid/electric vehicles equipped with the affected battery management system, but may not apply to all models.

Can replacing the hybrid battery fix code P1BFA?

If the battery is faulty, replacing it may resolve the issue. However, other components like wiring or the control module should also be checked.

How can I prevent code P1BFA from occurring?

Regular maintenance, inspecting electrical connections, and avoiding overloading the vehicleâ€™s electrical system can help prevent this code from appearing.