AutoCodes – Chevrolet – P1FE7 Chevrolet

P1FE7 Chevrolet Code - Hybrid/EV Battery Interface Control Module 9 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: P1FE7 Chevrolet indicates Hybrid/EV Battery Interface Control Module 9 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 958

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 P1FE7 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 P1FE7 Chevrolet - Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FE7 Chevrolet Code - Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FE7 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 P1FE7 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 P1FE7 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 P1FE7 Chevrolet Code

1. What does the OBDII code P1FE7 mean in a Chevrolet?

P1FE7 indicates an issue with the Hybrid/EV Battery Interface Control Module 9 voltage sensor circuit, specifically detecting a high voltage condition.

2. What are the common symptoms of code P1FE7 in a Chevrolet?

Symptoms may include the check engine light or hybrid system warning, reduced power, limited electric driving capability, or failure to charge the battery properly.

3. What causes the P1FE7 code to appear?

Common causes include a faulty voltage sensor, wiring or connector issues, a malfunctioning Hybrid/EV Battery Interface Control Module, or a software-related problem.

4. Can I drive my Chevrolet with a P1FE7 code?

Driving with this code is not recommended as it can lead to reduced performance, potential damage to the hybrid system, or an inability to use the EV mode.

5. How is the P1FE7 code diagnosed?

A technician will use a scan tool to retrieve the code, inspect the voltage sensor circuits, check for wiring damage or loose connections, and test the Hybrid/EV Battery Interface Control Module.

6. What repairs can fix the P1FE7 code?

Repairs may include replacing a faulty voltage sensor, repairing or replacing damaged wiring or connectors, reprogramming or replacing the control module, or updating the software.

7. How much does it cost to repair a P1FE7 code?

Repair costs can vary widely, ranging from $150 for wiring repairs to over $1,000 if the control module needs replacement, depending on labor rates and part availability.

8. Can a dead hybrid battery cause the P1FE7 code?

While a fully depleted or damaged hybrid battery is not a direct cause, it can contribute to triggering this code if it affects voltage sensor readings.

9. How can I prevent the P1FE7 code from occurring?

Regularly inspect and maintain the hybrid system, ensure all wiring and connectors are secure and free of damage, and address any warning lights promptly.

10. Does clearing the P1FE7 code solve the problem?

Clearing the code without addressing the root cause will not fix the issue, and the code is likely to return. Proper diagnosis and repair are necessary.