AutoCodes – Chevrolet – P0B93 Chevrolet

P0B93 Chevrolet Code - Hybrid/Electric Vehicle Battery 18 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: P0B93 Chevrolet indicates Hybrid/Electric Vehicle Battery 18 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 1,016

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B93 Chevrolet 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 P0B93 Chevrolet - Hybrid/Electric Vehicle Battery 18 Circuit High Voltage - AutoCodes.com — P0B93 Chevrolet Code - Hybrid/Electric Vehicle Battery 18 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B93 Chevrolet?

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

How to Fix the DTC P0B93 Chevrolet?

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 P0B93 Chevrolet 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 P0B93 Chevrolet Code

1. What are common symptoms of OBDII code P0B93 in a Chevrolet hybrid/electric vehicle?

- Common symptoms include the check engine light coming on, reduced hybrid system performance, and potential issues with battery charging.

2. What are the possible causes of OBDII code P0B93 in a Chevrolet hybrid/electric vehicle?

- The code P0B93 indicates a high voltage condition in the Hybrid/Electric Vehicle Battery 18 circuit, which can be caused by a faulty battery cell, a problem with the battery management system, or issues with high-voltage wiring.

3. How serious is OBDII code P0B93 in a Chevrolet hybrid/electric vehicle?

- OBDII code P0B93 should be addressed promptly as it can affect the performance and safety of the hybrid/electric vehicle. Ignoring this code could lead to further damage to the high-voltage battery system.

4. Can I drive my Chevrolet hybrid/electric vehicle with OBDII code P0B93?

- It is not recommended to drive the vehicle with OBDII code P0B93 present, as it can lead to reduced performance and potential safety hazards related to the high-voltage system.

5. How can I diagnose and repair OBDII code P0B93 in my Chevrolet hybrid/electric vehicle?

- Diagnosis typically involves inspecting the high-voltage battery system, checking for any visible damage, and using a diagnostic scan tool to pinpoint the exact cause of the code. Repair may involve replacing a faulty battery cell, addressing wiring issues, or reprogramming the battery management system.

6. Is it safe to attempt DIY repairs for OBDII code P0B93 in a Chevrolet hybrid/electric vehicle?

- Due to the high-voltage nature of the system involved, it is recommended to seek professional assistance when diagnosing and repairing OBDII code P0B93 in a Chevrolet hybrid/electric vehicle to ensure safety and proper handling of the components.

7. How much does it typically cost to repair OBDII code P0B93 in a Chevrolet hybrid/electric vehicle?

- The cost of repairing OBDII code P0B93 can vary depending on the exact cause of the issue, the extent of the damage, and the labor rates of the repair shop. It is advisable to get multiple quotes from reputable technicians.

8. Can OBDII code P0B93 be a recurring issue in a Chevrolet hybrid/electric vehicle?

- If the underlying cause of OBDII code P0B93 is not properly addressed, it can reoccur in a Chevrolet hybrid/electric vehicle. Regular maintenance and monitoring of the high-voltage system can help prevent future occurrences.

9. Will resetting the OBDII system clear OBDII code P0B93 in a Chevrolet hybrid/electric vehicle?

- Resetting the OBDII system may temporarily clear the code, but it will likely reappear if the root cause of the issue is not addressed. It is important to diagnose and repair the underlying problem to prevent further issues.

10. How can I prevent OBDII code P0B93 from occurring in my Chevrolet hybrid/electric vehicle?

- To prevent OBDII code P0B93, it is important to follow the manufacturer's recommended maintenance schedule, monitor the high-voltage system regularly, and address any issues promptly to avoid potential damage to the battery system.