AutoCodes – Generic – P1B93

P1B93 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 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 849

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

What does this mean?

What are the Possible Causes of the DTC P1B93?

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

How to Fix the DTC P1B93?

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 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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Need Help with the Code?

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Information for Specific Makes

P1B93 Buick — Hybrid/Electric Vehicle Battery 59 Circuit Performance
P1B93 Cadillac — Hybrid/Electric Vehicle Battery 59 Circuit Performance
P1B93 Chevrolet — Hybrid/Electric Vehicle Battery 59 Circuit Performance
P1B93 GMC — Hybrid/Electric Vehicle Battery 59 Circuit Performance
P1B93 Saturn — Hybrid/Electric Vehicle Battery 59 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 P1B93 Code

1. What are common symptoms of OBDII code P1B93 (Hybrid/Electric Vehicle Battery 59 Circuit Performance)?

- Common symptoms include reduced electric vehicle range, poor battery performance, and potential issues with the hybrid system.

2. What are some possible causes of OBDII code P1B93?

- Causes may include a faulty battery 59 circuit, issues with battery cell performance, or problems with the hybrid system components.

3. How can I diagnose OBDII code P1B93?

- Diagnosis typically involves using a diagnostic scan tool to read the code, testing the battery 59 circuit, checking battery cell performance, and inspecting the hybrid system components.

4. What should I do if I encounter code P1B93 on my hybrid or electric vehicle?

- It is recommended to consult a professional mechanic or dealership specializing in hybrid and electric vehicles for a thorough diagnosis and repair.

5. Can I continue driving my vehicle with OBDII code P1B93?

- It is not recommended to continue driving your vehicle with this code present, as it can lead to further damage to the hybrid system and affect overall performance.

6. Are there any DIY repair tips for addressing OBDII code P1B93?

- DIY repairs for this code are not recommended due to the complexity of hybrid and electric vehicle systems. It is best to seek professional assistance for proper diagnosis and repair.

7. How much does it typically cost to repair OBDII code P1B93?

- Repair costs for this code can vary depending on the extent of the issue, parts needed for replacement, and labor charges. It is advisable to get a quote from a qualified technician.

8. Is OBDII code P1B93 a common issue in hybrid and electric vehicles?

- While not as common as some other OBDII codes, P1B93 can occur in hybrid and electric vehicles, particularly as they age or if there are underlying battery or system issues.

9. Can a regular auto repair shop fix OBDII code P1B93, or do I need a specialized technician?

- It is recommended to seek out a repair shop or dealership with experience and expertise in hybrid and electric vehicle systems to properly diagnose and repair code P1B93.

10. How can I prevent OBDII code P1B93 from recurring in my hybrid or electric vehicle?

- Regular maintenance, proper care of the battery system, and addressing any warning signs promptly can help prevent the recurrence of OBDII code P1B93 in your vehicle.