AutoCodes – Chevrolet – P1E7F Chevrolet

P1E7F Chevrolet Code - Hybrid/Electric Vehicle Battery 84 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: P1E7F Chevrolet indicates Hybrid/Electric Vehicle Battery 84 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 940

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 Mar 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E7F 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 P1E7F Chevrolet - Hybrid/Electric Vehicle Battery 84 Circuit - AutoCodes.com — P1E7F Chevrolet Code - Hybrid/Electric Vehicle Battery 84 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E7F Chevrolet?

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

How to Fix the DTC P1E7F 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 P1E7F 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 P1E7F Chevrolet Code

What does the OBDII code P1E7F mean on a Chevrolet?

The P1E7F code indicates an issue with the Hybrid/Electric Vehicle Battery 84 Circuit, which monitors the voltage or condition of a specific cell or module in the battery pack.

What are the common symptoms of the P1E7F code?

Symptoms may include an illuminated check engine light, reduced vehicle performance, limited EV mode functionality, or a warning message related to the hybrid battery system.

What causes the P1E7F code to appear?

Common causes include a faulty battery cell, damaged wiring in the battery circuit, poor connections at the battery terminals, or a malfunctioning Battery Energy Control Module (BECM).

Can I drive my Chevrolet with the P1E7F code?

It is not recommended to drive with this code active, as it may cause reduced performance or damage other components in the hybrid system. Seek professional diagnosis and repair.

How do technicians diagnose the P1E7F code?

Technicians use a scan tool to retrieve codes, inspect the high-voltage battery pack, check wiring and connections, and test the affected battery circuits for faults.

What repairs are needed to fix the P1E7F code?

Repairs may include replacing a faulty battery cell/module, repairing damaged wiring, cleaning or tightening connections, or reprogramming the Battery Energy Control Module (BECM).

Is the P1E7F code covered under warranty?

This depends on your vehicleâ€™s warranty. High-voltage battery components are often covered under extended warranties, so consult your dealership for details.

Can a weak 12-volt battery cause the P1E7F code?

While unlikely, a weak 12-volt battery can sometimes trigger hybrid system errors. Ensure the 12-volt battery is in good condition before diagnosing further.

How much does it cost to fix the P1E7F code?

Repair costs vary widely depending on whether a battery cell/module, wiring repair, or module replacement is needed. Costs can range from a few hundred to several thousand dollars.

What tools are needed to troubleshoot the P1E7F code?

Specialized tools such as an OBDII scanner capable of reading hybrid system codes and a high-voltage safety kit are necessary for proper diagnosis and repair.