AutoCodes – Cadillac – P1E75 Cadillac

P1E75 Cadillac 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 Cadillac 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 825

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

What does this mean?

What are the Possible Causes of the DTC P1E75 Cadillac?

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

How to Fix the DTC P1E75 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 P1E75 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 P1E75 Cadillac Code

1. What are the common symptoms of OBDII code P1E75 in a Cadillac Hybrid/Electric Vehicle?

Common symptoms may include reduced hybrid/electric vehicle performance, decreased fuel efficiency, warning lights on the dashboard, and possible issues starting the vehicle.

2. What can cause the OBDII code P1E75 Cadillac Hybrid/Electric Vehicle Battery 74 Circuit?

This code is typically triggered by issues with the high voltage hybrid/electric vehicle battery, such as a malfunctioning battery module, wiring issues, or a faulty battery management system.

3. How serious is the P1E75 code in a Cadillac Hybrid/Electric Vehicle?

This code should be addressed promptly as it can affect the performance and efficiency of the hybrid/electric system. Continuing to drive with this code present may cause further damage to the vehicle.

4. How can I diagnose the OBDII code P1E75 in my Cadillac Hybrid/Electric Vehicle?

Diagnosis usually involves using a professional OBDII scanner to read the code, inspecting the high voltage battery components, checking for loose connections, and testing the battery modules.

5. Can I repair the P1E75 code in my Cadillac Hybrid/Electric Vehicle myself?

Repairing this code may require advanced knowledge and tools due to the high voltage nature of the hybrid/electric system. It is recommended to have the vehicle inspected and repaired by a qualified technician.

6. Are there any safety precautions to take when dealing with the P1E75 code in a Cadillac Hybrid/Electric Vehicle?

When working on the high voltage components related to this code, it is crucial to follow safety procedures outlined by the manufacturer and to disconnect the high voltage system before attempting any repairs.

7. What are some tips to prevent the OBDII code P1E75 from recurring in my Cadillac Hybrid/Electric Vehicle?

Regular maintenance of the hybrid/electric system, such as checking the battery health, keeping connections secure, and following the manufacturer's recommended service intervals, can help prevent this code from recurring.

8. How much does it cost to repair the OBDII code P1E75 in a Cadillac Hybrid/Electric Vehicle?

The cost of repair can vary depending on the exact cause of the code and the extent of the repairs needed. It is advisable to get a diagnostic from a professional technician to determine the cost accurately.

9. Can the OBDII code P1E75 in a Cadillac Hybrid/Electric Vehicle be ignored?

Ignoring this code can lead to further issues with the hybrid/electric system, potentially resulting in more costly repairs down the line. It is recommended to address the code as soon as possible.

10. Is it safe to continue driving my Cadillac Hybrid/Electric Vehicle with the P1E75 code present?

Continuing to drive with this code present is not recommended as it can affect the performance and safety of the vehicle. It is best to have the issue diagnosed and repaired before driving the vehicle again.