AutoCodes – Generic – P1E75

P1E75 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 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 1,297

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 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 - Hybrid/Electric Vehicle Battery 74 Circuit - AutoCodes.com — P1E75 Code - Hybrid/Electric Vehicle Battery 74 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E75?

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

How to Fix the DTC P1E75?

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 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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Need Help with the Code?

Get the P1E75 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1E75 Buick — Hybrid/Electric Vehicle Battery 74 Circuit
P1E75 Cadillac — Hybrid/Electric Vehicle Battery 74 Circuit
P1E75 Chevrolet — Hybrid/Electric Vehicle Battery 74 Circuit
P1E75 GMC — Hybrid/Electric Vehicle Battery 74 Circuit
P1E75 Saturn — Hybrid/Electric Vehicle Battery 74 Circuit

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 Code

1. What are common symptoms of OBDII code P1E75 (Hybrid/Electric Vehicle Battery 74 Circuit)?

- Common symptoms include decreased hybrid system performance, reduced fuel efficiency, and the illumination of the hybrid system warning light.

2. What are possible causes of OBDII code P1E75?

- Possible causes include a faulty hybrid battery pack, damaged battery cells, issues with the battery management system, or problems with the high-voltage wiring.

3. How can I diagnose the OBDII code P1E75?

- Diagnosis typically involves using a scan tool to read the code, assessing the hybrid battery pack health, inspecting the high-voltage wiring for damage, and checking the battery management system for faults.

4. Can driving with OBDII code P1E75 cause further damage?

- Continuing to drive with this code could potentially lead to more severe issues with the hybrid system, decreased performance, and even total failure of the hybrid battery pack.

5. How can I repair OBDII code P1E75?

- Repair options may include replacing the hybrid battery pack, repairing damaged battery cells, addressing issues with the battery management system, or fixing faulty high-voltage wiring.

6. Is it safe to drive my vehicle with OBDII code P1E75?

- It is generally not recommended to drive the vehicle with this code present, as it indicates potential issues with the hybrid system that could compromise safety and performance.

7. How much does it cost to repair OBDII code P1E75?

- The cost of repairs can vary significantly depending on the specific cause of the code, the extent of the damage, and whether parts need to be replaced or repaired. It is advisable to consult with a professional for an accurate estimate.

8. Can OBDII code P1E75 be reset without repairs?

- While the code can be cleared with a scan tool, it is crucial to address the underlying issue causing the code to prevent further problems with the hybrid system.

9. Are there any maintenance tips to prevent OBDII code P1E75 from occurring?

- Regularly servicing the hybrid system, monitoring the health of the battery pack, and addressing any warning lights or unusual behavior promptly can help prevent OBDII code P1E75 from occurring.

10. How long does it take to repair OBDII code P1E75?

- The repair time can vary based on the specific cause of the code and the complexity of the repairs needed. Some repairs may be completed in a few hours, while others could take longer depending on the extent of the issue.