AutoCodes – Saturn – P1B8F Saturn

P1B8F Saturn Code - Hybrid/Electric Vehicle Battery 57 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: P1B8F Saturn indicates Hybrid/Electric Vehicle Battery 57 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 731

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 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B8F 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 P1B8F Saturn - Hybrid/Electric Vehicle Battery 57 Circuit High Voltage - AutoCodes.com — P1B8F Saturn Code - Hybrid/Electric Vehicle Battery 57 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B8F Saturn?

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

How to Fix the DTC P1B8F 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 P1B8F 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 P1B8F Saturn Code

1. What are the common symptoms of OBDII code P1B8F in a Saturn hybrid/electric vehicle?

- Common symptoms include reduced electric drive performance, check engine light illumination, and potential issues with the high-voltage battery.

2. What can cause the OBDII code P1B8F to trigger in a Saturn hybrid/electric vehicle?

- The code P1B8F is usually triggered by a high-voltage circuit fault in the hybrid/electric vehicle battery, such as a wiring issue or a malfunction in the battery management system.

3. How serious is the OBDII code P1B8F in a Saturn hybrid/electric vehicle?

- The P1B8F code indicates a high-voltage circuit high voltage issue, which can affect the performance and safety of the vehicle. It is important to address this code promptly to prevent further damage.

4. What should I do if my Saturn hybrid/electric vehicle shows the OBDII code P1B8F?

- It is recommended to have the vehicle inspected by a qualified technician to diagnose the exact cause of the issue. Ignoring the code can lead to more severe problems with the high-voltage battery system.

5. Can I continue driving my Saturn hybrid/electric vehicle with the OBDII code P1B8F present?

- It is not recommended to continue driving the vehicle with the P1B8F code active, as it can affect the performance and safety of the vehicle. Have the issue addressed as soon as possible.

6. Are there any DIY repair tips for fixing the OBDII code P1B8F in a Saturn hybrid/electric vehicle?

- DIY repairs for the P1B8F code are not recommended due to the high-voltage nature of the issue. It is best to seek professional help to diagnose and repair the problem safely.

7. How much does it typically cost to repair the OBDII code P1B8F in a Saturn hybrid/electric vehicle?

- The cost of repairing the P1B8F code can vary depending on the exact cause of the issue and the necessary repairs. It is advisable to get a diagnosis from a technician for an accurate cost estimate.

8. Can the OBDII code P1B8F be a recurring issue in a Saturn hybrid/electric vehicle?

- If the root cause of the P1B8F code is not properly addressed, it can become a recurring issue. Ensure that the repairs are done correctly to prevent the code from reoccurring.

9. Is it safe to reset the OBDII code P1B8F in a Saturn hybrid/electric vehicle without fixing the underlying issue?

- Resetting the code without addressing the underlying issue can temporarily clear the check engine light, but it will not fix the problem with the high-voltage circuit. It is important to diagnose and repair the issue properly.

10. How can I prevent the OBDII code P1B8F from appearing in my Saturn hybrid/electric vehicle in the future?

- Regular maintenance and inspections of the high-voltage battery system can help prevent issues that trigger the P1B8F code. Following the manufacturer's recommended maintenance schedule is crucial for vehicle health.