AutoCodes – Chevrolet – P1FE1 Chevrolet

P1FE1 Chevrolet Code - Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Circuit High Voltage

Quick Answer

The hybrid battery contains 192 individual 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: P1FE1 Chevrolet indicates Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Circuit High Voltage.
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 891

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 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1FE1 Chevrolet Description

The hybrid battery contains 192 individual cells. Two cells are welded together in parallel and called a cell group. There are a total of 96 cell groups in the hybrid battery 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 cell groups are joined to form 3 distinct sections. The first 24 battery cell groups make up battery section 1. This section is adjacent to the cowl and contains battery cell groups 73 through 96. The next 28 battery cell groups make up battery section 2. This section is located behind section 1 and contains battery cell groups 45 through 72. The transverse battery section is section number 3 and it contains the remaining 44 battery cell groups 1 through 44. The battery sections also contain two temperature sensors, with one sensor located at each end of the section.
The battery energy control module monitors the voltage of the 96 battery cell groups. The 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 voltage sense harness joins this connector to the battery energy control module.
The battery energy control module contains internal interface control modules that monitor specific cell groups.
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 the hybrid powertrain control module 2 through serial data. The hybrid powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P1FE1 Chevrolet - Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FE1 Chevrolet Code - Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FE1 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 P1FE1 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 P1FE1 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 P1FE1 Chevrolet Code

1. What does the OBDII code P1FE1 mean on a Chevrolet vehicle?

The P1FE1 code indicates a problem with the Hybrid/EV Battery Interface Control Module 3, specifically a high voltage issue in the voltage sensor circuit.

2. What are the common symptoms of the P1FE1 code?

Common symptoms include illuminated warning lights (such as the Check Engine Light or Hybrid/EV system warning), reduced performance, or limited electric mode functionality.

3. What causes the P1FE1 code to appear?

Potential causes include a faulty voltage sensor in the battery interface control module, damaged wiring or connectors, or a malfunctioning Hybrid/EV Battery Interface Control Module 3.

4. Can the P1FE1 code affect vehicle drivability?

Yes, it can cause limited hybrid or EV functionality, reduced power output, or the vehicle entering a "limp mode" to protect the battery system.

5. How do you diagnose the P1FE1 code?

Diagnosis involves using a scan tool to retrieve freeze frame data, inspecting wiring and connectors for damage, and testing the voltage sensor and control module for proper operation.

6. Can the P1FE1 code be caused by a weak 12V battery?

While unlikely, a weak 12V battery can sometimes cause voltage-related errors, so itâ€™s worth checking the 12V battery before deeper diagnostics.

7. Is it safe to drive with the P1FE1 code?

Driving with the P1FE1 code is not recommended, as it may indicate a serious issue with the hybrid/EV battery system that could lead to further damage or reduced performance.

8. How much does it cost to fix the P1FE1 code?

Repair costs vary depending on the root cause but may range from $200 to $1,000 or more, especially if the control module needs replacement.

9. Can the P1FE1 code be fixed by resetting the system?

While clearing the code with a scan tool may temporarily remove the warning, the underlying issue must be addressed to prevent the code from returning.

10. Does the P1FE1 code require professional repair?

Yes, due to the high-voltage nature of hybrid/EV systems, diagnosing and repairing this code should be performed by a trained technician with proper safety equipment.