AutoCodes – Saturn – P1E4F Saturn

P1E4F Saturn 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 Saturn 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 819

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 Saturn 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 Saturn - Hybrid/Electric Vehicle Battery 36 Circuit - AutoCodes.com — P1E4F Saturn Code - Hybrid/Electric Vehicle Battery 36 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E4F Saturn?

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

How to Fix the DTC P1E4F Saturn?

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 Saturn 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 Saturn Code

What does the OBDII code P1E4F mean on a Saturn vehicle?

The P1E4F code indicates an issue with the Hybrid/Electric Vehicle Battery 36 Circuit, typically related to monitoring or communication with the high-voltage battery system.

What are the common symptoms of the P1E4F code?

Symptoms may include the hybrid or electric system not functioning properly, reduced power, a check engine light, or notifications of limited propulsion mode.

What causes the P1E4F code to appear?

Common causes include a faulty battery module, damaged wiring or connectors in the circuit, issues with the battery management system, or software malfunctions.

Can I drive my car with the P1E4F code?

Driving with this code is not recommended, as it could lead to further system issues or reduced performance of the hybrid/electric powertrain.

How is the P1E4F code diagnosed?

Technicians typically use a scan tool to read the code, inspect the high-voltage battery circuit, check wiring and connectors, and test the battery module for faults.

What repairs might fix the P1E4F code?

Repairs may include replacing a faulty battery module, repairing damaged wiring or connectors, updating software, or recalibrating the battery management system.

Can a weak 12-volt battery cause the P1E4F code?

While unlikely, a weak 12-volt battery can sometimes impact the hybrid/electric system's diagnostics and lead to unexpected error codes.

How much does it cost to fix the P1E4F code?

Repair costs vary but could range from a few hundred dollars for wiring repairs to several thousand dollars if the high-voltage battery or related components need replacement.

Is the P1E4F code covered under warranty?

Hybrid or electric vehicle battery components may be covered under a manufacturerâ€™s warranty, especially if the vehicle is within the warranty period for hybrid-specific parts.

Can the P1E4F code be cleared without fixing the issue?

Clearing the code without addressing the underlying problem will likely result in the code returning and may exacerbate the issue over time.