AutoCodes – Saturn – P1BF8 Saturn

P1BF8 Saturn Code - Hybrid/Electric Vehicle Battery 92 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: P1BF8 Saturn indicates Hybrid/Electric Vehicle Battery 92 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 896

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 P1BF8 Saturn 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 P1BF8 Saturn - Hybrid/Electric Vehicle Battery 92 Circuit High Voltage - AutoCodes.com — P1BF8 Saturn Code - Hybrid/Electric Vehicle Battery 92 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BF8 Saturn?

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

How to Fix the DTC P1BF8 Saturn?

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 P1BF8 Saturn 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 P1BF8 Saturn Code

1. What are the common symptoms of OBDII code P1BF8 in a Saturn Hybrid/Electric Vehicle?

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

2. What can cause the OBDII code P1BF8 in a Saturn Hybrid/Electric Vehicle?

- The code P1BF8 typically indicates a high voltage condition in the Hybrid/Electric Vehicle Battery 92 circuit, which can be caused by a faulty battery pack, damaged wiring, or a malfunctioning battery management system.

3. How can I diagnose the OBDII code P1BF8 in my Saturn Hybrid/Electric Vehicle?

- Diagnosis usually involves using an OBDII scanner to retrieve the specific fault code, inspecting the hybrid/electric battery system for physical damage, and testing the circuitry and components for proper voltage levels.

4. What are the potential dangers of driving with OBDII code P1BF8 in a Saturn Hybrid/Electric Vehicle?

- Driving with a high voltage condition in the battery circuit can be dangerous as it may lead to further damage to the electrical system, potential overheating, or even pose a risk of electric shock.

5. Can I repair the OBDII code P1BF8 in my Saturn Hybrid/Electric Vehicle on my own?

- While basic troubleshooting like checking for loose connections or damaged wiring can be done by DIY enthusiasts, diagnosing and repairing high voltage issues in a hybrid/electric vehicle should be left to trained professionals due to the potential risks involved.

6. How much does it typically cost to repair OBDII code P1BF8 in a Saturn Hybrid/Electric Vehicle?

- The cost of repair can vary depending on the exact cause of the high voltage condition, but it may involve replacing damaged components, repairing wiring, or recalibrating the battery management system, which can range from a few hundred to a few thousand dollars.

7. Can resetting the OBDII code P1BF8 in my Saturn Hybrid/Electric Vehicle make it go away permanently?

- Resetting the code may temporarily clear the check engine light, but if the underlying issue causing the high voltage condition is not addressed, the code is likely to reappear once the system detects the problem again.

8. Are there any preventive maintenance tips to avoid OBDII code P1BF8 in a Saturn Hybrid/Electric Vehicle?

- Regularly scheduled maintenance, including checking the battery system, inspecting wiring for wear or damage, and keeping up with recommended service intervals, can help prevent issues that may trigger the P1BF8 fault code.

9. Is it safe to continue driving my Saturn Hybrid/Electric Vehicle with the OBDII code P1BF8 if I don't notice any performance issues?

- It is not recommended to continue driving with the code present, even if you don't notice any immediate performance issues, as unresolved high voltage conditions can lead to further damage and safety hazards in the vehicle.

10. How long does it typically take to repair OBDII code P1BF8 in a Saturn Hybrid/Electric Vehicle?

- The repair time can vary based on the complexity of the issue, availability of parts, and the technician's expertise, but fixing the high voltage condition associated with the P1BF8 code may take a few hours to a full day in most cases.