AutoCodes – Cadillac – P1E4E Cadillac

P1E4E Cadillac Code - Hybrid/Electric Vehicle Battery 35 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: P1E4E Cadillac indicates Hybrid/Electric Vehicle Battery 35 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 853

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 Apr 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E4E 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 P1E4E Cadillac - Hybrid/Electric Vehicle Battery 35 Circuit - AutoCodes.com — P1E4E Cadillac Code - Hybrid/Electric Vehicle Battery 35 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E4E Cadillac?

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

How to Fix the DTC P1E4E 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 P1E4E 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 P1E4E Cadillac Code

1. What are common symptoms of OBDII code P1E4E in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include reduced power, poor fuel efficiency, and difficulty starting the vehicle.

2. What does OBDII code P1E4E indicate in a Cadillac Hybrid/Electric Vehicle?

- This code indicates an issue with the Hybrid/Electric Vehicle Battery 35 Circuit in the vehicle.

3. What are possible causes of OBDII code P1E4E in a Cadillac Hybrid/Electric Vehicle?

- Possible causes include a faulty battery pack, damaged wiring, poor connections, or issues with the battery management system.

4. How can I diagnose the Hybrid/Electric Vehicle Battery 35 Circuit issue related to OBDII code P1E4E?

- Diagnosis usually involves using a suitable diagnostic tool to check the battery voltage, inspecting wiring for damage, and testing the battery cells.

5. Is it safe to continue driving with OBDII code P1E4E active in a Cadillac Hybrid/Electric Vehicle?

- It is not recommended to continue driving with this code active, as it can lead to further damage to the vehicle's electrical system.

6. Can I reset OBDII code P1E4E in a Cadillac Hybrid/Electric Vehicle by disconnecting the battery?

- While disconnecting the battery may temporarily clear the code, it is important to diagnose and repair the underlying issue to prevent it from recurring.

7. How much does it typically cost to repair OBDII code P1E4E in a Cadillac Hybrid/Electric Vehicle?

- Repair costs can vary depending on the exact cause of the issue, but it may involve replacing the battery pack, repairing wiring, or addressing issues with the battery management system.

8. Are there any DIY tips for troubleshooting OBDII code P1E4E in a Cadillac Hybrid/Electric Vehicle?

- DIY tips include checking for loose connections, inspecting the battery pack for visible damage, and ensuring proper maintenance of the vehicle's electrical components.

9. Can a regular mechanic repair OBDII code P1E4E in a Cadillac Hybrid/Electric Vehicle, or is specialized expertise required?

- Specialized expertise in hybrid/electric vehicle systems is often recommended for diagnosing and repairing issues related to OBDII code P1E4E.

10. How can I prevent OBDII code P1E4E from recurring in my Cadillac Hybrid/Electric Vehicle?

- Regular maintenance, proper charging practices, and timely inspection of the battery system can help prevent the recurrence of OBDII code P1E4E in your vehicle.