AutoCodes – Chevrolet – P1E4F Chevrolet

P1E4F Chevrolet Code - Hybrid/Electric Vehicle Battery 36 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: P1E4F Chevrolet indicates Hybrid/Electric Vehicle Battery 36 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 1,050

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 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E4F 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 P1E4F Chevrolet - Hybrid/Electric Vehicle Battery 36 Circuit - AutoCodes.com — P1E4F Chevrolet Code - Hybrid/Electric Vehicle Battery 36 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E4F Chevrolet?

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

How to Fix the DTC P1E4F 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 P1E4F 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 P1E4F Chevrolet Code

What does the OBDII code P1E4F mean on a Chevrolet?

The P1E4F code indicates an issue with the Hybrid/Electric Vehicle Battery 36 Circuit, typically related to a fault in the high-voltage battery system or its associated components.

What are the common symptoms of the P1E4F code on a Chevrolet?

Common symptoms include reduced vehicle performance, warning lights on the dashboard (such as the check engine light or hybrid system warning), and potential issues with battery charging or discharging.

What causes the P1E4F code to appear on a Chevrolet?

The code can be caused by damaged wiring, a malfunctioning hybrid battery module, a faulty battery control module, or poor electrical connections in the battery circuit.

Can I drive my Chevrolet with the P1E4F code active?

Driving with the P1E4F code is not recommended, as it may lead to reduced performance or further damage to the hybrid system. Have the issue diagnosed and repaired as soon as possible.

How is the P1E4F code diagnosed on a Chevrolet?

A technician will use a scan tool to retrieve the code, inspect wiring and connections in the battery circuit, and test the hybrid battery and control module for proper operation.

What repairs are needed to resolve the P1E4F code on a Chevrolet?

Repairs may include fixing damaged wiring, replacing a faulty battery module or control module, or cleaning and securing electrical connections in the circuit.

Is the P1E4F code covered under warranty for my Chevrolet?

This depends on your vehicleâ€™s warranty coverage, particularly for hybrid or electric components. Check with your dealership for specifics.

How much does it cost to fix the P1E4F code on a Chevrolet?

Repair costs vary depending on the root cause, ranging from $100 for wiring repairs to several thousand dollars if the hybrid battery needs replacement.

Can a weak 12V battery trigger the P1E4F code on a Chevrolet?

While unlikely, issues with the 12V battery can sometimes affect hybrid system diagnostics. Ensure the 12V battery is in good condition before extensive troubleshooting.

How can I prevent the P1E4F code from occurring on my Chevrolet?

Regular maintenance of the hybrid system, including periodic inspections of wiring and connections, can help prevent issues leading to the P1E4F code.