AutoCodes – Chevrolet – P1BFB Chevrolet

P1BFB Chevrolet Code - Hybrid/Electric Vehicle Battery 93 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: P1BFB Chevrolet indicates Hybrid/Electric Vehicle Battery 93 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.

Save to My Repairs My Repairs

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

Code Popularity 983

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 P1BFB Chevrolet 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 P1BFB Chevrolet - Hybrid/Electric Vehicle Battery 93 Circuit High Voltage - AutoCodes.com — P1BFB Chevrolet Code - Hybrid/Electric Vehicle Battery 93 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BFB Chevrolet?

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

How to Fix the DTC P1BFB Chevrolet?

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 P1BFB Chevrolet 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 P1BFB Chevrolet code?

Need more information on how to fix the P1BFB Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1BFB Chevrolet 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 P1BFB Chevrolet Code

1. What does the OBDII code P1BFB indicate on a Chevrolet?

The P1BFB code on a Chevrolet indicates a problem with the Hybrid/Electric Vehicle Battery 93 Circuit, specifically pointing to a high voltage issue in the system.

2. What are common symptoms of code P1BFB in a Chevrolet?

Common symptoms include reduced vehicle performance, possible inability to start the vehicle, error messages on the dashboard related to the battery system, and in some cases, the vehicle may enter a fail-safe mode to prevent further damage.

3. What can cause the P1BFB code to appear in a Chevrolet?

Causes for the P1BFB code can include faulty battery modules, damaged wiring or connectors in the battery circuit, issues with the battery management system, or a malfunctioning hybrid control module.

4. How is the P1BFB code diagnosed in a Chevrolet?

Diagnosing the P1BFB code involves using a scan tool to read the fault code and examining the battery management system. Technicians will also visually inspect wiring and connectors, check voltage levels, and potentially test individual battery modules to identify the fault.

5. What are the potential repairs for fixing the P1BFB code in a Chevrolet?

Repairs can range from replacing damaged wiring or connectors, replacing faulty battery modules, updating or reprogramming the battery management system, to replacing the hybrid control module if necessary.

6. Is it safe to drive a Chevrolet with the P1BFB code active?

Driving with the P1BFB code active is not advisable as it involves critical components of the hybrid system and could lead to further damage or reduced vehicle performance, potentially leaving you stranded.

7. How urgent is it to fix a P1BFB code in a Chevrolet?

It is quite urgent to address the P1BFB code as it relates to the vehicle's battery system, which is crucial for the operation and safety of hybrid and electric vehicles. Delaying repairs can lead to more significant issues or complete failure of the battery system.

8. Can a P1BFB code affect the overall lifespan of a Chevrolet's battery system?

Yes, if not addressed promptly, a P1BFB code can lead to further degradation of the battery system, potentially shortening its lifespan and leading to expensive battery replacements sooner than typical.

9. What tools are needed to diagnose and repair a P1BFB code in a Chevrolet?

Tools required may include a professional OBDII scanner, multimeter, and possibly a battery tester. Technicians might also need software for diagnosing and reprogramming the vehicle's hybrid control systems.