AutoCodes – Generic – P1BF0

P1BF0 Code - Hybrid/Electric Vehicle Battery 90 Circuit Performance

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: P1BF0 indicates Hybrid/Electric Vehicle Battery 90 Circuit Performance.
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 1,445

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 P1BF0 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 P1BF0 - Hybrid/Electric Vehicle Battery 90 Circuit Performance - AutoCodes.com — P1BF0 Code - Hybrid/Electric Vehicle Battery 90 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BF0?

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

How to Fix the DTC P1BF0?

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 P1BF0 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 P1BF0 code?

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Need Help with the Code?

Get the P1BF0 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1BF0 Buick — Hybrid/Electric Vehicle Battery 90 Circuit Performance
P1BF0 Cadillac — Hybrid/Electric Vehicle Battery 90 Circuit Performance
P1BF0 Chevrolet — Hybrid/Electric Vehicle Battery 90 Circuit Performance
P1BF0 GMC — Hybrid/Electric Vehicle Battery 90 Circuit Performance
P1BF0 Saturn — Hybrid/Electric Vehicle Battery 90 Circuit Performance

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 P1BF0 Code

1. What does the OBDII code P1BF0 mean?

The P1BF0 code indicates a performance issue in the Hybrid/Electric Vehicle Battery 90 Circuit, which is related to the battery management or monitoring system.

2. What are the common symptoms of the P1BF0 code?

Symptoms may include a check engine light, reduced hybrid or EV performance, limited battery charging or discharging, or the vehicle entering a limp mode.

3. What causes the P1BF0 code to appear?

This code can be triggered by issues such as a faulty battery module, damaged wiring or connectors in the battery circuit, or a malfunctioning battery control module.

4. Can I continue driving with the P1BF0 code?

Itâ€™s not recommended to drive for extended periods with this code, as it may lead to reduced vehicle performance or further damage to the hybrid/EV battery system.

5. How is the P1BF0 code diagnosed?

A technician will use a scan tool to retrieve the code, inspect the battery circuit wiring and connectors, and perform voltage and resistance tests on the affected components.

6. What repairs can fix the P1BF0 code?

Repairs may include replacing a faulty battery module, repairing damaged wiring or connectors, or reprogramming or replacing the battery control module.

7. Can a weak 12V battery cause the P1BF0 code?

While a weak 12V battery can cause electrical issues, the P1BF0 code is specific to the hybrid/EV battery circuit and not directly related to the 12V battery.

8. How much does it cost to repair the P1BF0 code?

Repair costs depend on the root cause, ranging from $100 for wiring repairs to over $1,000 if a battery module or control module needs replacement.

9. Can clearing the code fix the P1BF0 issue?

Clearing the code without addressing the underlying problem will not resolve the issue, and the code is likely to return.

10. What should I do if the P1BF0 code persists after repairs?

If the code persists, have the battery system rechecked for any overlooked issues, and ensure the battery control module has the latest software updates.