AutoCodes – Buick – P1B93 Buick

P1B93 Buick Code - Hybrid/Electric Vehicle Battery 59 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: P1B93 Buick indicates Hybrid/Electric Vehicle Battery 59 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 860

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 P1B93 Buick 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 P1B93 Buick - Hybrid/Electric Vehicle Battery 59 Circuit Performance - AutoCodes.com — P1B93 Buick Code - Hybrid/Electric Vehicle Battery 59 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B93 Buick?

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

How to Fix the DTC P1B93 Buick?

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 P1B93 Buick 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 P1B93 Buick Code

1. What are the common symptoms of OBDII code P1B93 in a Buick Hybrid/Electric Vehicle?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential issues with the vehicle's battery system.

2. What are the possible causes of OBDII code P1B93 in a Buick Hybrid/Electric Vehicle?

- The code P1B93 typically indicates a problem with Hybrid/Electric Vehicle Battery 59 Circuit Performance, which could be caused by issues such as a faulty battery cell, wiring problems, or a malfunctioning battery management system.

3. How serious is OBDII code P1B93 in a Buick Hybrid/Electric Vehicle?

- OBDII code P1B93 should be addressed promptly as it can affect the overall performance and efficiency of the hybrid system in the vehicle. Ignoring the issue can lead to further damage and potentially more expensive repairs.

4. Can I continue driving my Buick Hybrid/Electric Vehicle with OBDII code P1B93?

- It is not recommended to continue driving the vehicle with the OBDII code P1B93 present, as it can lead to reduced performance and potential damage to the hybrid system. It is best to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose OBDII code P1B93 in a Buick Hybrid/Electric Vehicle?

- Diagnosing OBDII code P1B93 usually requires a professional diagnostic scan tool to read the specific fault codes related to the Hybrid/Electric Vehicle Battery 59 Circuit Performance. A thorough inspection of the battery system and related components may also be necessary.

6. What are some repair tips for addressing OBDII code P1B93 in a Buick Hybrid/Electric Vehicle?

- Repair tips may include checking and repairing any damaged wiring, testing and potentially replacing faulty battery cells, and ensuring the battery management system is functioning correctly. Consulting a professional technician for proper diagnosis and repair is recommended.

7. Can a DIY enthusiast fix OBDII code P1B93 in a Buick Hybrid/Electric Vehicle?

- While some basic troubleshooting steps can be taken by a DIY enthusiast, diagnosing and repairing OBDII code P1B93 in a Buick Hybrid/Electric Vehicle often requires specialized equipment and expertise. It is advisable to seek assistance from a qualified technician for proper diagnosis and repair.

8. How much does it cost to repair OBDII code P1B93 in a Buick Hybrid/Electric Vehicle?

- The cost of repairing OBDII code P1B93 in a Buick Hybrid/Electric Vehicle can vary depending on the underlying cause of the issue, the extent of the damage, and the labor rates of the repair facility. It is recommended to obtain estimates from different service providers.

9. Are there any recalls or service bulletins related to OBDII code P1B93 in Buick Hybrid/Electric Vehicles?

- It is advisable to check with the manufacturer or authorized dealerships for any recalls or service bulletins related to OBDII code P1B93 in Buick Hybrid/Electric Vehicles. Keeping up to date with such information can help in addressing the issue effectively.

10. How can I prevent OBDII code P1B93 from occurring in my Buick Hybrid/Electric Vehicle?

- Regular maintenance of the hybrid system, including checking the battery health, ensuring proper charging habits, and addressing any warning lights promptly, can help prevent OBDII code P1B93 from occurring in your Buick Hybrid/Electric Vehicle.