AutoCodes – Chevrolet – P1E93 Chevrolet

P1E93 Chevrolet Code - Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit

Quick Answer

The drive motor battery contains 288 cells. Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection. 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: P1E93 Chevrolet indicates Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit.
Common causes: Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection.
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 844

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 P1E93 Chevrolet Description

The drive motor battery contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the drive motor battery assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 volts, for a nominal system voltage of 355 volts 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 cell groups. Voltage sense lines are attached to each individual cell group, and these sense lines terminate at a connector located on the top surface of the battery section. A serviceable voltage sense harness joins this connector to a drive motor battery high-voltage interface control module, also located on the top surface of the battery section. The drive motor battery high-voltage interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one drive motor battery high-voltage interface control module located on battery sections one and two, and two drive motor battery high-voltage interface control modules associated with battery section three. The drive motor battery high-voltage interface control module, voltage sense harnesses, battery control 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 P1E93 Chevrolet - Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit - AutoCodes.com — P1E93 Chevrolet Code - Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit

What does this mean?

What are the Possible Causes of the DTC P1E93 Chevrolet?

Faulty Hybrid/EV Battery Interface Control Module
Hybrid/EV Battery Interface Control Module harness is open or shorted
Hybrid/EV Battery Interface Control Module circuit poor electrical connection

How to Fix the DTC P1E93 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 P1E93 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 P1E93 Chevrolet Code

1. What are common symptoms of OBDII code P1E93 in a Chevrolet hybrid/EV vehicle?

- Common symptoms include issues with the hybrid/EV battery, reduced hybrid system performance, warning lights on the dashboard, and potential drivability issues.

2. What are possible causes of OBDII code P1E93 in a Chevrolet hybrid/EV vehicle?

- Possible causes include a malfunctioning Hybrid/EV Battery Interface Control Module, wiring issues, a faulty 5V reference circuit, or problems with the hybrid/EV battery.

3. How can I diagnose OBDII code P1E93 in my Chevrolet hybrid/EV vehicle?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, conducting a visual inspection of the battery interface control module and related wiring, and performing specific troubleshooting tests as outlined in the vehicle's service manual.

4. What are the repair options for OBDII code P1E93 in a Chevrolet hybrid/EV vehicle?

- Repair options may include repairing or replacing the Hybrid/EV Battery Interface Control Module, addressing any wiring issues, ensuring proper connections, and potentially replacing the hybrid/EV battery if necessary.

5. Can I continue driving my Chevrolet hybrid/EV vehicle with OBDII code P1E93 present?

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

6. How critical is it to address OBDII code P1E93 in a timely manner?

- It is important to address this code promptly to avoid potential damage to the hybrid system, prevent further issues, and ensure the vehicle operates safely and efficiently.

7. Are there any common DIY repairs for OBDII code P1E93 in a Chevrolet hybrid/EV vehicle?

- DIY repairs may include checking and securing connections, inspecting wiring for damage, and replacing the Hybrid/EV Battery Interface Control Module if deemed necessary.

8. Will resetting the OBDII code P1E93 resolve the issue in my Chevrolet hybrid/EV vehicle?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the code. Proper diagnosis and repair are necessary to address the problem effectively.

9. How can I prevent OBDII code P1E93 from occurring in my Chevrolet hybrid/EV vehicle in the future?

- Regular maintenance, such as checking the hybrid system components, ensuring proper connections, and addressing any issues promptly, can help prevent the recurrence of this code.

10. Is it recommended to seek professional help for diagnosing and repairing OBDII code P1E93 in a Chevrolet hybrid/EV vehicle?

- Yes, it is advisable to consult a qualified mechanic or dealership with experience in hybrid/EV systems to accurately diagnose and repair OBDII code P1E93 to ensure the issue is resolved correctly.