AutoCodes – Cadillac – P1E82 Cadillac

P1E82 Cadillac Code - Hybrid/Electric Vehicle Battery 87 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: P1E82 Cadillac indicates Hybrid/Electric Vehicle Battery 87 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 P1E82 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 P1E82 Cadillac - Hybrid/Electric Vehicle Battery 87 Circuit - AutoCodes.com — P1E82 Cadillac Code - Hybrid/Electric Vehicle Battery 87 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E82 Cadillac?

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

How to Fix the DTC P1E82 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 P1E82 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 P1E82 Cadillac Code

1. What are common symptoms of OBDII code P1E82 in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include reduced hybrid/electric vehicle performance, poor fuel efficiency, and potential issues with battery charging.

2. What does the OBDII code P1E82 Cadillac Hybrid/Electric Vehicle Battery 87 Circuit refer to?

- This code specifically indicates a fault in the circuit related to the 87 module of the hybrid/electric vehicle battery in a Cadillac.

3. What are possible causes of OBDII code P1E82 in a Cadillac Hybrid/Electric Vehicle?

- Possible causes include damaged wiring in the battery circuit, a faulty battery module, issues with battery cooling, or problems with the battery management system.

4. How can I diagnose the OBDII code P1E82 in my Cadillac Hybrid/Electric Vehicle?

- Diagnosis typically involves using a professional OBDII scanner to read the specific fault code, conducting a visual inspection of the battery components, and checking for any visible signs of damage.

5. What are the repair options for OBDII code P1E82 in a Cadillac Hybrid/Electric Vehicle?

- Repair options may include repairing or replacing damaged wiring, replacing a faulty battery module, addressing cooling system issues, or reprogramming the battery management system.

6. Can I continue driving my Cadillac with the OBDII code P1E82 present?

- It is not recommended to continue driving the vehicle with this fault code present, as it can lead to further damage to the hybrid/electric system and potentially compromise vehicle safety.

7. How much does it typically cost to repair OBDII code P1E82 in a Cadillac Hybrid/Electric Vehicle?

- Repair costs can vary depending on the extent of the damage and the specific repair needed, but it may range from a few hundred to a few thousand dollars.

8. Are there any maintenance tips to prevent OBDII code P1E82 in a Cadillac Hybrid/Electric Vehicle?

- Regularly inspecting the hybrid/electric system, following recommended maintenance schedules, and avoiding overloading the vehicle's electrical system can help prevent issues leading to this fault code.

9. Can a DIY enthusiast fix OBDII code P1E82 in a Cadillac Hybrid/Electric Vehicle?

- While some basic inspections can be done by a DIY enthusiast, diagnosing and repairing this code often requires specialized knowledge and tools, so it is recommended to seek professional assistance.

10. How long does it typically take to repair OBDII code P1E82 in a Cadillac Hybrid/Electric Vehicle?

- The repair time can vary depending on the specific issue and the availability of parts, but it may take anywhere from a few hours to a few days to complete the repair.