AutoCodes – Chevrolet – P1E99 Chevrolet

P1E99 Chevrolet Code - Hybrid/EV Battery Interface Control Module 2 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: P1E99 Chevrolet indicates Hybrid/EV Battery Interface Control Module 2 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.

Save to My Repairs My Repairs

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

Code Popularity 857

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
Add Comment

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

Code P1E99 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 P1E99 Chevrolet - Hybrid/EV Battery Interface Control Module 2 5 V Reference Circuit - AutoCodes.com — P1E99 Chevrolet Code - Hybrid/EV Battery Interface Control Module 2 5 V Reference Circuit

What does this mean?

What are the Possible Causes of the DTC P1E99 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 P1E99 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 P1E99 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.

Need more information about the P1E99 Chevrolet code?

Need more information on how to fix the P1E99 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1E99 Chevrolet 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 P1E99 Chevrolet Code

1. What are common symptoms of an OBDII code P1E99 in a Chevrolet Hybrid/EV vehicle?

- Common symptoms include reduced fuel efficiency, loss of power, illuminated warning lights on the dashboard, and potential drivability issues.

2. What does the OBDII code P1E99 in a Chevrolet Hybrid/EV indicate?

- The code P1E99 points to a malfunction in the Hybrid/EV Battery Interface Control Module 2 5 V Reference Circuit in the vehicle.

3. What are possible causes of the OBDII code P1E99 in a Chevrolet Hybrid/EV?

- Potential causes include a faulty Hybrid/EV Battery Interface Control Module, damaged wiring or connectors, low battery voltage, or internal module issues.

4. How can I diagnose the OBDII code P1E99 in my Chevrolet Hybrid/EV?

- Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, inspecting the battery interfaces and connections, and testing the voltage output of the control module.

5. What are the repair options for resolving the OBDII code P1E99 in a Chevrolet Hybrid/EV?

- Repair options may include replacing the Hybrid/EV Battery Interface Control Module, repairing damaged wiring or connectors, ensuring proper battery voltage, and clearing the trouble codes.

6. Can I drive my Chevrolet Hybrid/EV with an active OBDII code P1E99?

- It is not recommended to continue driving the vehicle with an active P1E99 code, as it can lead to further damage and potentially unsafe driving conditions.

7. How urgent is it to address the OBDII code P1E99 in a Chevrolet Hybrid/EV?

- It is advisable to address the P1E99 code promptly to prevent potential damage to the Hybrid/EV system and ensure the vehicle operates efficiently and safely.

8. Are there any DIY tips for troubleshooting the OBDII code P1E99 in a Chevrolet Hybrid/EV?

- DIY tips may include checking for loose or damaged connections, inspecting the control module for visible damage, and ensuring the battery voltage meets specifications.

9. How can I prevent the recurrence of the OBDII code P1E99 in my Chevrolet Hybrid/EV?

- To prevent the P1E99 code from reoccurring, it is important to maintain the vehicle's electrical components, follow the manufacturer's maintenance schedule, and address any issues promptly.

10. Is it necessary to reset the OBDII code P1E99 after repairs in a Chevrolet Hybrid/EV?

- It is recommended to reset the trouble codes after completing repairs to clear the P1E99 code from the system and ensure proper functioning of the vehicle.