AutoCodes – Chevrolet – P1E03 Chevrolet

P1E03 Chevrolet Code - Hybrid/Electric Vehicle Battery 95 Circuit High Voltage

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: P1E03 Chevrolet indicates Hybrid/Electric Vehicle Battery 95 Circuit High Voltage.
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 805

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 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E03 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 P1E03 Chevrolet - Hybrid/Electric Vehicle Battery 95 Circuit High Voltage - AutoCodes.com — P1E03 Chevrolet Code - Hybrid/Electric Vehicle Battery 95 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1E03 Chevrolet?

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

How to Fix the DTC P1E03 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 P1E03 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 P1E03 Chevrolet Code

1. What are the common symptoms of OBDII code P1E03 in a Chevrolet hybrid/electric vehicle?

- Common symptoms include the check engine light illuminating, reduced power mode, and potential issues with the vehicle's hybrid/electric system.

2. What does the OBDII code P1E03 Chevrolet Hybrid/Electric Vehicle Battery 95 Circuit High Voltage indicate?

- This code indicates a high voltage condition in the battery circuit 95 of a Chevrolet hybrid/electric vehicle.

3. What are the possible causes of OBDII code P1E03 in a Chevrolet hybrid/electric vehicle?

- Possible causes include a faulty battery pack, high voltage wiring issues, a malfunctioning battery management system, or sensor failures.

4. How can I diagnose the OBDII code P1E03 in my Chevrolet hybrid/electric vehicle?

- Diagnosing this code typically involves using a scan tool to retrieve the specific fault codes, testing the high voltage components, and inspecting the wiring for any damage or loose connections.

5. Can I continue driving my Chevrolet hybrid/electric vehicle with the P1E03 trouble code?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the high voltage system and potentially unsafe conditions.

6. How can I repair OBDII code P1E03 in my Chevrolet hybrid/electric vehicle?

- Repairing this code may involve replacing the faulty battery pack, repairing or replacing high voltage wiring, addressing issues with the battery management system, or replacing malfunctioning sensors.

7. Is it safe to attempt DIY repairs for OBDII code P1E03 in a Chevrolet hybrid/electric vehicle?

- Due to the high voltage nature of the components involved, it is recommended to seek professional help or consult with a qualified technician for repairs related to this code.

8. How much does it typically cost to fix OBDII code P1E03 in a Chevrolet hybrid/electric vehicle?

- The cost of repair can vary depending on the exact cause of the code, but it may range from a few hundred to over a thousand dollars, considering parts and labor.

9. Are there any preventative maintenance tips to avoid OBDII code P1E03 in a Chevrolet hybrid/electric vehicle?

- Regularly inspecting the high voltage components, following manufacturer's maintenance schedules, and addressing any warning signs promptly can help prevent issues leading to this trouble code.

10. Can OBDII code P1E03 in a Chevrolet hybrid/electric vehicle affect the vehicle's performance or fuel efficiency?

- Yes, this code can impact the vehicle's performance and fuel efficiency due to potential issues with the high voltage system affecting overall operation.