AutoCodes – Cadillac – P1B75 Cadillac

P1B75 Cadillac 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 Cadillac 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 863

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

What does this mean?

What are the Possible Causes of the DTC P1B75 Cadillac?

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

How to Fix the DTC P1B75 Cadillac?

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 Cadillac 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 Cadillac Code

1. What are the common symptoms of OBDII code P1B75 Cadillac related to Hybrid/Electric Vehicle Battery 49 Circuit Performance?

- Common symptoms include decreased fuel efficiency, reduced power output, and potential issues with hybrid system performance.

2. What are the possible causes of OBDII code P1B75 Cadillac indicating Hybrid/Electric Vehicle Battery 49 Circuit Performance issues?

- Possible causes may include a faulty battery module, damaged wiring or connectors, software issues, or problems with the battery management system.

3. How can I diagnose the source of OBDII code P1B75 Cadillac for Hybrid/Electric Vehicle Battery 49 Circuit Performance problems?

- Diagnosis typically involves using specialized diagnostic tools to check the battery module, inspecting wiring and connectors for damage, and analyzing system data for inconsistencies.

4. Can I continue driving my Cadillac if OBDII code P1B75 is present for Hybrid/Electric Vehicle Battery 49 Circuit Performance?

- It is recommended to address the issue promptly to prevent potential damage to the hybrid/electric system. Continued driving with this code present may lead to further complications.

5. What are some repair tips for resolving OBDII code P1B75 Cadillac related to Hybrid/Electric Vehicle Battery 49 Circuit Performance?

- Repair tips may include replacing the faulty battery module, repairing damaged wiring or connectors, updating software, or recalibrating the battery management system.

6. Are there any safety precautions to keep in mind when dealing with Hybrid/Electric Vehicle Battery 49 Circuit Performance issues?

- Yes, always follow manufacturer guidelines and safety procedures when working on hybrid/electric components to avoid electrical hazards and ensure proper system performance.

7. How critical is it to address OBDII code P1B75 Cadillac for Hybrid/Electric Vehicle Battery 49 Circuit Performance promptly?

- It is important to address this code promptly to prevent potential damage to the hybrid/electric system and ensure optimal performance and fuel efficiency.

8. Can a DIY enthusiast attempt to fix OBDII code P1B75 Cadillac related to Hybrid/Electric Vehicle Battery 49 Circuit Performance?

- While some basic inspections may be performed by enthusiasts, diagnosing and repairing issues related to the hybrid/electric system typically require specialized knowledge and tools best handled by professionals.

9. What is the typical cost associated with resolving OBDII code P1B75 Cadillac for Hybrid/Electric Vehicle Battery 49 Circuit Performance?

- The cost can vary depending on the exact cause of the issue, but repairs related to this code may involve parts replacement, software updates, or system recalibration, which can range from moderate to high expenses.

10. How can regular maintenance help prevent OBDII code P1B75 Cadillac issues related to Hybrid/Electric Vehicle Battery 49 Circuit Performance?

- Regular maintenance, such as checking the battery system, monitoring performance, and addressing any warning signs promptly, can help prevent issues leading to this OBDII code and ensure the longevity of the hybrid/electric components.