AutoCodes – Buick – P1E75 Buick

P1E75 Buick Code - Hybrid/Electric Vehicle Battery 74 Circuit

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: P1E75 Buick indicates Hybrid/Electric Vehicle Battery 74 Circuit.
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 724

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 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E75 Buick 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 P1E75 Buick - Hybrid/Electric Vehicle Battery 74 Circuit - AutoCodes.com — P1E75 Buick Code - Hybrid/Electric Vehicle Battery 74 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E75 Buick?

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

How to Fix the DTC P1E75 Buick?

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 P1E75 Buick 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 P1E75 Buick Code

1. What are common symptoms of OBDII code P1E75 in a Buick hybrid/electric vehicle?

- Common symptoms include decreased fuel efficiency, loss of power, illuminated check engine light, and issues with the hybrid/electric battery system.

2. What could cause the OBDII code P1E75 to appear in a Buick hybrid/electric vehicle?

- The code P1E75 typically indicates a fault in the Hybrid/Electric Vehicle Battery 74 Circuit, which could be caused by a damaged battery cell, wiring issues, or a malfunctioning battery management system.

3. How serious is the OBDII code P1E75 in a Buick hybrid/electric vehicle?

- The code P1E75 should be taken seriously as it can affect the performance and efficiency of the hybrid/electric system. It is recommended to address the issue promptly to prevent further damage.

4. Can I continue driving my Buick with the OBDII code P1E75 present?

- It is not recommended to continue driving with the code P1E75 active, as it can lead to further damage to the hybrid/electric system. It is best to have the vehicle diagnosed and repaired as soon as possible.

5. How can I diagnose and repair the OBDII code P1E75 in my Buick hybrid/electric vehicle?

- Diagnosing and repairing the code P1E75 typically requires specialized equipment and knowledge of hybrid/electric vehicle systems. It is recommended to consult a qualified technician or dealership for proper diagnosis and repair.

6. Are there any DIY tips for troubleshooting the OBDII code P1E75 in a Buick hybrid/electric vehicle?

- DIY troubleshooting for the code P1E75 is not recommended due to the complexity of hybrid/electric systems. It is best to leave diagnosis and repair to professionals with the necessary expertise and tools.

7. How much does it cost to repair the OBDII code P1E75 in a Buick hybrid/electric vehicle?

- The cost of repairing the code P1E75 can vary depending on the specific issue causing the fault. It is advisable to get a diagnostic assessment from a qualified technician to determine the exact repair cost.

8. Can the OBDII code P1E75 be a recurring issue in a Buick hybrid/electric vehicle?

- The code P1E75 can be a recurring issue if the root cause is not properly addressed during the repair process. It is important to ensure that all underlying issues are fixed to prevent the code from reoccurring.

9. Will resetting the OBDII code P1E75 solve the problem in a Buick hybrid/electric vehicle?

- Simply resetting the code P1E75 may temporarily clear the fault, but it will not fix the underlying issue causing the fault. It is crucial to diagnose and repair the root cause to prevent further problems.

10. How can I prevent the OBDII code P1E75 from appearing in my Buick hybrid/electric vehicle?

- To prevent the code P1E75, it is important to maintain regular maintenance of the hybrid/electric system, including checking the battery health, ensuring proper wiring connections, and addressing any warning signs promptly.