AutoCodes – Generic – P1FE2

P1FE2 Code - Hybrid/EV Battery Interface Control Module 4 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: P1FE2 indicates Hybrid/EV Battery Interface Control Module 4 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 900

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 P1FE2 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 P1FE2 - Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FE2 Code - Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FE2?

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 P1FE2?

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 P1FE2 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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Information for Specific Makes

P1FE2 Buick — Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage
P1FE2 Cadillac — Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage
P1FE2 Chevrolet — Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage
P1FE2 GMC — Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage
P1FE2 Saturn — Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage

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 P1FE2 Code

1. What are common symptoms of OBDII code P1FE2 related to Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- Common symptoms include the illumination of the check engine light, reduced hybrid/EV system performance, and potential drivability issues.

2. What are possible causes of OBDII code P1FE2 indicating an issue with the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- Causes can include a faulty battery interface control module, high voltage sensor malfunction, wiring issues, or a problem with the hybrid/EV battery itself.

3. How can I diagnose the source of OBDII code P1FE2 in relation to Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- Diagnosis typically involves using a scan tool to retrieve the code, inspecting the relevant components and wiring for damage, and conducting voltage tests to pinpoint the issue.

4. Are there any safety precautions to keep in mind when working on a hybrid/EV vehicle with an OBDII code P1FE2?

- It is crucial to always follow manufacturer guidelines and disconnect the high voltage system properly before attempting any diagnosis or repair to avoid the risk of electrical shock.

5. Can OBDII code P1FE2 be cleared and reset without addressing the underlying issue with the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- Clearing the code without fixing the root cause may temporarily turn off the check engine light, but the issue will likely reoccur, resulting in potential safety hazards or further damage.

6. Is it possible to repair OBDII code P1FE2 related to the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage without professional help?

- While some basic troubleshooting like checking for loose connections or damaged wiring can be done by DIY enthusiasts, diagnosing and repairing complex hybrid/EV system issues often requires specialized knowledge and tools.

7. Can a faulty high voltage sensor cause OBDII code P1FE2 to trigger in a hybrid/EV vehicle?

- Yes, a malfunctioning high voltage sensor within the Hybrid/EV Battery Interface Control Module 4 can indeed lead to the detection of code P1FE2 due to inaccurate voltage readings.

8. How urgent is it to address OBDII code P1FE2 associated with Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- It is recommended to address this code promptly to prevent further damage to the hybrid/EV system and ensure the vehicle operates safely and efficiently.

9. Are there any specific repair tips for resolving OBDII code P1FE2 linked to the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- Repair tips may include checking for software updates from the manufacturer, ensuring proper battery connections, and consulting technical service bulletins for known issues and solutions.

10. What is the typical cost range for repairing OBDII code P1FE2 related to issues with the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- Repair costs can vary depending on the exact cause of the problem, but they may range from a few hundred to over a thousand dollars, especially if specialized parts or professional services are required.