AutoCodes – Saturn – P1BF5 Saturn

P1BF5 Saturn Code - Hybrid/Electric Vehicle Battery 91 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: P1BF5 Saturn indicates Hybrid/Electric Vehicle Battery 91 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 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 P1BF5 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 P1BF5 Saturn - Hybrid/Electric Vehicle Battery 91 Circuit High Voltage - AutoCodes.com — P1BF5 Saturn Code - Hybrid/Electric Vehicle Battery 91 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BF5 Saturn?

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

How to Fix the DTC P1BF5 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 P1BF5 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 P1BF5 Saturn Code

1. What are the common symptoms of OBDII code P1BF5 Saturn related to the Hybrid/Electric Vehicle Battery 91 Circuit High Voltage?

- Common symptoms include reduced vehicle performance, illuminated check engine light, and potential issues with the hybrid/electric system.

2. What are the possible causes of OBDII code P1BF5 Saturn indicating the Hybrid/Electric Vehicle Battery 91 Circuit High Voltage fault?

- Possible causes may include a malfunctioning battery sensor, high voltage wiring issues, or problems with the battery management system.

3. How can I diagnose the OBDII code P1BF5 Saturn related to the Hybrid/Electric Vehicle Battery 91 Circuit High Voltage?

- Diagnosis typically involves using a scan tool to read the code, checking the battery voltage levels, inspecting the high voltage wiring, and testing the battery sensor.

4. Can driving with the OBDII code P1BF5 Saturn present in a Saturn hybrid/electric vehicle be dangerous?

- Driving with this fault code can be risky as it may lead to further damage to the hybrid/electric system and potentially pose a safety hazard. It is advisable to address the issue promptly.

5. Are there any DIY repair tips for fixing the OBDII code P1BF5 Saturn associated with the Hybrid/Electric Vehicle Battery 91 Circuit High Voltage problem?

- DIY repair is not recommended for this issue due to the high voltage nature of the system. It is best to seek professional assistance from a certified mechanic or dealership.

6. How much does it typically cost to repair the OBDII code P1BF5 Saturn concerning the Hybrid/Electric Vehicle Battery 91 Circuit High Voltage fault?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

7. Is it possible to reset the OBDII code P1BF5 Saturn for the Hybrid/Electric Vehicle Battery 91 Circuit High Voltage fault without fixing the underlying problem?

- While it is possible to clear the code temporarily, it will likely reappear until the root cause is addressed. Ignoring the issue can lead to more severe problems in the future.

8. Can extreme weather conditions impact the occurrence of OBDII code P1BF5 Saturn in a Saturn hybrid/electric vehicle?

- Yes, extreme temperatures can affect the performance of the battery and the high voltage system, potentially triggering the fault code. Proper maintenance and care are essential in such conditions.

9. How long can I safely drive with the OBDII code P1BF5 Saturn indicating the Hybrid/Electric Vehicle Battery 91 Circuit High Voltage issue?

- It is recommended to limit driving with this fault code present to prevent further damage to the hybrid/electric system. Seek professional help as soon as possible.

10. Are there any recalls or technical service bulletins related to the OBDII code P1BF5 Saturn and the Hybrid/Electric Vehicle Battery 91 Circuit High Voltage issue in Saturn vehicles?

- It is advisable to check with the manufacturer or authorized service centers for any relevant recalls or technical service bulletins related to this specific fault code in Saturn hybrid/electric vehicles.