AutoCodes – Chevrolet – P1E9F Chevrolet

P1E9F Chevrolet Code - Hybrid/EV Battery Interface Control Module 3 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: P1E9F Chevrolet indicates Hybrid/EV Battery Interface Control Module 3 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 768

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 P1E9F 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 P1E9F Chevrolet - Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit - AutoCodes.com — P1E9F Chevrolet Code - Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit

What does this mean?

What are the Possible Causes of the DTC P1E9F 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 P1E9F 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 P1E9F 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 P1E9F Chevrolet Code

1. What are the common symptoms of OBDII code P1E9F in a Chevrolet related to the Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit?

- Common symptoms include illumination of the Check Engine Light, reduced hybrid/EV system performance, and potential drivability issues.

2. What can cause the OBDII code P1E9F to appear in a Chevrolet hybrid vehicle?

- The code P1E9F usually indicates a fault in the Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit, which can be caused by wiring issues, a faulty control module, or a malfunction in the battery system.

3. How can I diagnose the OBDII code P1E9F in my Chevrolet hybrid car?

- Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, inspecting the wiring and connectors in the Hybrid/EV Battery Interface Control Module circuit, and testing the components for proper operation.

4. What are some repair tips for addressing OBDII code P1E9F in a Chevrolet hybrid vehicle?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the Hybrid/EV Battery Interface Control Module if necessary, and ensuring proper connection and operation of the battery system components.

5. Is it safe to continue driving my Chevrolet with the OBDII code P1E9F present?

- It is recommended to address the underlying issue causing the code P1E9F as soon as possible to prevent potential damage to the hybrid/EV system and ensure safe operation of the vehicle.

6. Can I reset the OBDII code P1E9F in my Chevrolet without fixing the underlying issue?

- While you can clear the trouble code using a diagnostic scanner, it is crucial to address the root cause of the code (related to the Hybrid/EV Battery Interface Control Module) to prevent it from reoccurring.

7. How much does it typically cost to repair OBDII code P1E9F in a Chevrolet hybrid vehicle?

- Repair costs can vary depending on the exact cause of the issue, but they may involve expenses related to parts replacement, labor, and diagnostic fees. Consulting with a professional technician is recommended for accurate cost estimation.

8. Can a DIY enthusiast fix the OBDII code P1E9F in a Chevrolet hybrid car?

- While some basic troubleshooting and repairs may be possible for DIY enthusiasts, addressing complex issues related to the Hybrid/EV Battery Interface Control Module may require specialized tools and expertise, making professional assistance advisable.

9. Are there any recalls or technical service bulletins related to OBDII code P1E9F in Chevrolet hybrid vehicles?

- It is recommended to check with Chevrolet dealership or the National Highway Traffic Safety Administration (NHTSA) website for any recalls or technical service bulletins related to the specific OBDII code P1E9F in your vehicle.

10. How can I prevent OBDII code P1E9F from appearing in my Chevrolet hybrid car in the future?

- Regular maintenance, including inspection of the hybrid/EV system components, proper handling of the battery system, and addressing any warning signs promptly, can help prevent the occurrence of OBDII code P1E9F in your Chevrolet vehicle.