AutoCodes – Buick – P1FE3 Buick

P1FE3 Buick Code - Hybrid/EV Battery Interface Control Module 5 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: P1FE3 Buick indicates Hybrid/EV Battery Interface Control Module 5 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 774

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 P1FE3 Buick 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 P1FE3 Buick - Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FE3 Buick Code - Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FE3 Buick?

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 P1FE3 Buick?

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 P1FE3 Buick 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 P1FE3 Buick Code

1. What are the common symptoms of OBDII code P1FE3 in a Buick Hybrid/EV vehicle?

The common symptoms of OBDII code P1FE3 in a Buick Hybrid/EV vehicle include the check engine light illuminating, reduced hybrid/EV performance, and potential drivability issues.

2. What could be causing the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Circuit High Voltage fault in a Buick Hybrid/EV vehicle?

The P1FE3 code in a Buick Hybrid/EV vehicle could be caused by a faulty hybrid/EV battery interface control module, high voltage sensor malfunction, wiring issues, or a problem with the battery itself.

3. How serious is the P1FE3 fault code in a Buick Hybrid/EV vehicle?

The P1FE3 fault code should be addressed promptly as it relates to the high voltage system in a Hybrid/EV vehicle. Ignoring this code could lead to further damage to the battery system and affect the vehicle's performance.

4. Can I continue driving my Buick Hybrid/EV vehicle with the P1FE3 code present?

It is not recommended to continue driving your Buick Hybrid/EV vehicle with the P1FE3 code present, as it indicates a high voltage sensor circuit issue that could potentially lead to more serious problems and safety concerns.

5. How can I diagnose and repair the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Circuit High Voltage issue in my Buick?

Diagnosing and repairing the P1FE3 code typically requires advanced diagnostic tools and knowledge of hybrid/EV systems. It is recommended to seek assistance from a qualified technician or dealership familiar with Hybrid/EV vehicles.

6. Are there any DIY tips for troubleshooting the P1FE3 code in a Buick Hybrid/EV?

Due to the complexity of hybrid/EV systems and the high voltage nature of the issue, DIY troubleshooting for the P1FE3 code is not recommended. It's best to have a professional diagnose and repair the problem to ensure safety and proper functioning of the vehicle.

7. How much does it cost to repair the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Circuit High Voltage fault in a Buick?

The cost of repairing the P1FE3 fault code can vary depending on the exact cause of the issue, parts needed, and labor costs. It is advisable to get a diagnostic assessment from a qualified technician to determine the specific repair cost.

8. Can a faulty hybrid/EV Battery Interface Control Module cause other issues besides triggering the P1FE3 code?

Yes, a faulty hybrid/EV Battery Interface Control Module can potentially cause other issues such as reduced battery performance, charging problems, and overall drivability issues in a Buick Hybrid/EV vehicle.

9. Is it possible to prevent the occurrence of the P1FE3 fault code in a Buick Hybrid/EV vehicle?

Regular maintenance of the hybrid/EV system, including checking the high voltage components, can help prevent issues like the P1FE3 fault code. Following the manufacturer's recommended maintenance schedule is crucial for early detection and prevention of such problems.

10. How long does it typically take to repair the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Circuit High Voltage issue in a Buick?

The repair time for the P1FE3 fault code can vary depending on the specific cause of the issue and the availability of parts. It is best to consult with a professional technician for an accurate estimate of the repair time.