AutoCodes – Chevrolet – P1B75 Chevrolet

P1B75 Chevrolet Code - Hybrid/Electric Vehicle Battery 49 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: P1B75 Chevrolet indicates Hybrid/Electric Vehicle Battery 49 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 876

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 P1B75 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 P1B75 Chevrolet - Hybrid/Electric Vehicle Battery 49 Circuit Performance - AutoCodes.com — P1B75 Chevrolet Code - Hybrid/Electric Vehicle Battery 49 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B75 Chevrolet?

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

How to Fix the DTC P1B75 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 P1B75 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 P1B75 Chevrolet Code

1. What are the common symptoms of OBDII code P1B75 in a Chevrolet hybrid/electric vehicle?

- Common symptoms may include reduced hybrid battery performance, decreased fuel efficiency, and potential issues with starting or charging the vehicle.

2. What could cause the OBDII code P1B75 to appear in a Chevrolet hybrid/electric vehicle?

- The code P1B75 typically indicates a circuit performance issue within the hybrid/electric vehicle battery 49, which could be caused by wiring faults, battery module failures, or issues with the battery management system.

3. How can I diagnose the OBDII code P1B75 in my Chevrolet hybrid/electric vehicle?

- Diagnosing the code P1B75 may require specialized diagnostic equipment to assess the hybrid battery system, inspecting the battery connections, and conducting voltage tests on the battery modules.

4. Is it safe to continue driving my Chevrolet hybrid/electric vehicle with the OBDII code P1B75 present?

- It is not recommended to continue driving the vehicle with the code P1B75 present as it may lead to further damage to the hybrid/electric vehicle battery system and could potentially affect the vehicle's performance and safety.

5. Can I repair the OBDII code P1B75 in my Chevrolet hybrid/electric vehicle myself?

- Repairing the code P1B75 in a Chevrolet hybrid/electric vehicle may require specialized knowledge and tools, so it is advisable to consult a certified technician or dealership for proper diagnosis and repair.

6. What are some tips for maintaining the hybrid/electric vehicle battery to prevent the OBDII code P1B75 from appearing?

- Regularly inspecting the battery connections, ensuring proper charging habits, and following the manufacturer's maintenance recommendations can help prevent issues that may trigger the code P1B75.

7. How much does it typically cost to repair the OBDII code P1B75 in a Chevrolet hybrid/electric vehicle?

- The cost of repairing the code P1B75 can vary depending on the root cause of the issue, the extent of the damage, and whether any components need to be replaced. It's best to get a professional assessment for an accurate estimate.

8. Can a faulty hybrid/electric vehicle battery cause the OBDII code P1B75 to appear?

- Yes, a faulty hybrid/electric vehicle battery, particularly in the battery 49 circuit, can trigger the code P1B75 due to performance issues or communication errors within the battery system.

9. Are there any recalls or technical service bulletins related to the OBDII code P1B75 in Chevrolet hybrid/electric vehicles?

- It's recommended to check with Chevrolet dealerships or online databases for any relevant recalls or technical service bulletins related to the code P1B75 to see if there are known issues or solutions provided by the manufacturer.

10. How long does it typically take to repair the OBDII code P1B75 in a Chevrolet hybrid/electric vehicle?

- The repair time for the code P1B75 can vary depending on the complexity of the issue, availability of parts, and the technician's workload. In some cases, it may be resolved quickly, while more extensive repairs could take longer.