AutoCodes – Chevrolet – P1E84 Chevrolet

P1E84 Chevrolet Code - Hybrid/Electric Vehicle Battery 89 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: P1E84 Chevrolet indicates Hybrid/Electric Vehicle Battery 89 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 880

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 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E84 Chevrolet 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 P1E84 Chevrolet - Hybrid/Electric Vehicle Battery 89 Circuit - AutoCodes.com — P1E84 Chevrolet Code - Hybrid/Electric Vehicle Battery 89 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E84 Chevrolet?

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

How to Fix the DTC P1E84 Chevrolet?

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 P1E84 Chevrolet 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 P1E84 Chevrolet Code

1. What are the common symptoms of OBDII code P1E84 in a Chevrolet Hybrid/Electric Vehicle?

- Common symptoms include reduced battery performance, difficulty starting the vehicle, and potential illumination of the check engine light.

2. What could cause the OBDII code P1E84 to trigger in a Chevrolet Hybrid/Electric Vehicle?

- The code P1E84 typically indicates a fault in the Hybrid/Electric Vehicle Battery 89 Circuit, which could be caused by a wiring issue, a damaged battery cell, or a malfunctioning control module.

3. How can I diagnose the OBDII code P1E84 in my Chevrolet Hybrid/Electric Vehicle?

- Diagnosis involves using an OBDII scanner to retrieve the code, inspecting the battery connections for any visible damage, and conducting a voltage test on the battery cells.

4. Is it safe to continue driving my Chevrolet Hybrid/Electric Vehicle with the OBDII code P1E84 present?

- It is not recommended to drive the vehicle with the code P1E84 present, as it can lead to further damage to the battery system and potentially affect the vehicle's performance.

5. Can I reset the OBDII code P1E84 in my Chevrolet Hybrid/Electric Vehicle on my own?

- While you can clear the code with an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

6. How much does it typically cost to repair the OBDII code P1E84 in a Chevrolet Hybrid/Electric Vehicle?

- The cost of repair can vary depending on the exact cause of the code, but it may involve replacing damaged wiring, repairing battery connections, or even replacing the battery pack.

7. Are there any preventive maintenance tips to avoid the OBDII code P1E84 in a Chevrolet Hybrid/Electric Vehicle?

- Regularly inspecting the battery connections, keeping the battery pack well-maintained, and following the manufacturer's recommended service schedule can help prevent issues leading to the code P1E84.

8. Can a DIY enthusiast with basic automotive knowledge repair the OBDII code P1E84 in a Chevrolet Hybrid/Electric Vehicle?

- While some basic troubleshooting steps can be taken, repairing the Hybrid/Electric Vehicle Battery 89 Circuit issue typically requires specialized knowledge and equipment, so it is best left to professionals.

9. How long does it usually take to repair the OBDII code P1E84 in a Chevrolet Hybrid/Electric Vehicle?

- The repair time can vary depending on the extent of the issue, but it may take a few hours to a full day to diagnose the problem, obtain necessary parts, and complete the repair.

10. Can the OBDII code P1E84 in a Chevrolet Hybrid/Electric Vehicle affect the vehicle's overall fuel efficiency?

- Yes, if left unresolved, the code P1E84 can impact the vehicle's fuel efficiency due to the compromised performance of the hybrid/electric battery system.