AutoCodes – Cadillac – P1E7E Cadillac

P1E7E Cadillac Code - Hybrid/Electric Vehicle Battery 83 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: P1E7E Cadillac indicates Hybrid/Electric Vehicle Battery 83 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 838

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1E7E 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 P1E7E Cadillac - Hybrid/Electric Vehicle Battery 83 Circuit - AutoCodes.com — P1E7E Cadillac Code - Hybrid/Electric Vehicle Battery 83 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E7E Cadillac?

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

How to Fix the DTC P1E7E 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 P1E7E 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.

Need more information about the P1E7E Cadillac code?

Need more information on how to fix the P1E7E Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1E7E Cadillac code diagnosed by a professional: Find a repair shop in your area

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 P1E7E Cadillac Code

1. What does the OBDII code P1E7E mean on a Cadillac?

P1E7E indicates an issue with the Hybrid/Electric Vehicle Battery 83 Circuit, often related to a voltage imbalance or communication issue within the battery management system.

2. What are the symptoms of the P1E7E code in a Cadillac?

Common symptoms include a check engine light, reduced hybrid/electric vehicle performance, limited driving range, or the vehicle entering limp mode.

3. What causes the P1E7E code to appear?

The code can be triggered by a faulty battery cell, a damaged battery control module, corroded or loose wiring, or a software issue in the battery management system.

4. Can I drive my Cadillac with the P1E7E code?

Itâ€™s not recommended to drive with this code active, as it may indicate a serious issue with the hybrid battery and could lead to further damage or reduced vehicle performance.

5. How is the P1E7E code diagnosed?

A technician will use a diagnostic scanner to read the code, inspect the battery control module, check for damaged wiring, and test individual battery cells for voltage irregularities.

6. What repairs are typically needed for the P1E7E code?

Repairs may include replacing a faulty battery cell, repairing or replacing damaged wiring, reprogramming the battery control module, or updating vehicle software.

7. How much does it cost to fix the P1E7E code on a Cadillac?

Repair costs can vary widely, typically ranging from $200 for wiring repairs to several thousand dollars if the battery pack needs replacement.

8. Can a software update fix the P1E7E code?

In some cases, a software update for the battery control module can resolve the issue if the problem is related to incorrect system calibration or communication errors.

9. How can I prevent the P1E7E code from returning?

Regular maintenance, keeping the battery system clean and free of corrosion, and promptly addressing warning lights can help prevent the code from recurring.

10. Is the P1E7E code covered under warranty for my Cadillac?

Depending on your vehicleâ€™s age and mileage, the hybrid battery and related components may still be covered under a manufacturer or extended warranty. Check with your dealer for details.