AutoCodes – Chevrolet – P0B75 Chevrolet

P0B75 Chevrolet Code - Hybrid/Electric Vehicle Battery 12 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: P0B75 Chevrolet indicates Hybrid/Electric Vehicle Battery 12 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 949

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 P0B75 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 P0B75 Chevrolet - Hybrid/Electric Vehicle Battery 12 Circuit High Voltage - AutoCodes.com — P0B75 Chevrolet Code - Hybrid/Electric Vehicle Battery 12 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B75 Chevrolet?

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

How to Fix the DTC P0B75 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 P0B75 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 P0B75 Chevrolet Code

1. What are the common symptoms of OBDII code P0B75 in a Chevrolet hybrid/electric vehicle?

- Common symptoms include the check engine light coming on, reduced fuel efficiency, and potential issues with the high voltage battery system.

2. What could cause the OBDII code P0B75 to appear in a Chevrolet hybrid/electric vehicle?

- The code P0B75 indicates a problem with the Hybrid/Electric Vehicle Battery 12 Circuit High Voltage, which could be caused by a faulty battery module, wiring issues, or a malfunctioning battery management system.

3. How serious is OBDII code P0B75 in a Chevrolet hybrid/electric vehicle?

- This code indicates a problem with the high voltage battery system, which is a crucial component in a hybrid/electric vehicle. It is important to address this issue promptly to avoid potential safety hazards and further damage to the vehicle.

4. Can I continue driving my Chevrolet hybrid/electric vehicle with the OBDII code P0B75 present?

- It is not recommended to continue driving with the P0B75 code present, as it could lead to further damage to the high voltage battery system and potentially compromise the vehicle's performance and safety.

5. How can I diagnose and repair OBDII code P0B75 in my Chevrolet hybrid/electric vehicle?

- Diagnosing and repairing the P0B75 code typically requires specialized diagnostic equipment and expertise. It is recommended to take your vehicle to a qualified technician or dealership for proper diagnosis and repair.

6. Are there any DIY tips for troubleshooting OBDII code P0B75 in a Chevrolet hybrid/electric vehicle?

- While basic troubleshooting steps like checking for loose connections or damaged wiring can be performed, dealing with high voltage systems requires specialized training and equipment. It is best to leave complex electrical issues to professionals.

7. How much does it cost to repair OBDII code P0B75 in a Chevrolet hybrid/electric vehicle?

- Repair costs for the P0B75 code can vary depending on the underlying cause of the issue. It is recommended to get a diagnostic assessment from a qualified technician to determine the exact repair cost.

8. Will resetting the check engine light make OBDII code P0B75 go away permanently?

- Resetting the check engine light may temporarily clear the code, but if the underlying issue causing the P0B75 code is not addressed, it is likely to reappear. It is essential to diagnose and repair the root cause of the problem.

9. Can a low or dead high voltage battery cause OBDII code P0B75 in a Chevrolet hybrid/electric vehicle?

- Yes, a low or dead high voltage battery can contribute to triggering the P0B75 code. Ensuring the high voltage battery is properly charged and functioning is crucial in diagnosing and resolving this issue.

10. Are there any safety precautions to keep in mind when dealing with OBDII code P0B75 in a Chevrolet hybrid/electric vehicle?

- When working on the high voltage system related to the P0B75 code, it is essential to follow proper safety procedures and protocols to prevent electric shock or other hazards. If you are not trained in handling high voltage systems, seek professional assistance.