AutoCodes – Buick – P1FE0 Buick

P1FE0 Buick Code - Hybrid/EV Battery Interface Control Module 2 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: P1FE0 Buick indicates Hybrid/EV Battery Interface Control Module 2 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 766

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 P1FE0 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 P1FE0 Buick - Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FE0 Buick Code - Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FE0 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 P1FE0 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 P1FE0 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 P1FE0 Buick Code

1. What are the common symptoms of OBDII code P1FE0 in a Buick related to the Hybrid/EV Battery Interface Control Module 2 Voltage Sensor Circuit High Voltage?

The common symptoms include illuminated check engine light, reduced hybrid/EV system performance, and potential drivability issues.

2. What are the possible causes of OBDII code P1FE0 in a Buick Hybrid/EV system?

Possible causes include a faulty hybrid/EV battery interface control module, issues with the voltage sensor circuit, high voltage in the system, or wiring/connectivity issues.

3. How can I diagnose the OBDII code P1FE0 in my Buick Hybrid/EV system?

Diagnosis typically involves using a diagnostic scanner to retrieve the trouble code, inspecting the hybrid/EV battery interface control module, checking the voltage sensor circuit, and testing the overall high voltage system for any abnormalities.

4. What are the implications of driving with OBDII code P1FE0 in a Buick Hybrid/EV vehicle?

Continued driving with this code present may lead to further damage to the hybrid/EV battery system, reduced fuel efficiency, and potential safety risks. It is recommended to address the issue promptly.

5. Is it safe to drive my Buick with OBDII code P1FE0 present?

It is generally not recommended to drive the vehicle with this code active, as it indicates a potential issue with the high voltage system in the Hybrid/EV battery. It is best to have the vehicle inspected by a qualified technician.

6. Can I repair OBDII code P1FE0 in my Buick Hybrid/EV system myself?

Repairing this code may require specialized knowledge and tools due to the high voltage nature of the system. It is recommended to seek assistance from a professional technician or dealership.

7. How much does it typically cost to repair OBDII code P1FE0 in a Buick Hybrid/EV system?

The cost of repair can vary depending on the exact cause of the issue, parts needed for replacement, and labor charges. It is advisable to get a diagnosis from a technician to determine the cost accurately.

8. Are there any preventive maintenance tips to avoid OBDII code P1FE0 in a Buick Hybrid/EV vehicle?

Regularly inspecting the hybrid/EV system, following recommended maintenance schedules, and addressing any warning signs promptly can help prevent issues leading to this trouble code.

9. Can a low battery voltage trigger OBDII code P1FE0 in a Buick Hybrid/EV system?

While low battery voltage is not a common cause of this specific code, it is essential to ensure the overall health of the battery system to prevent any potential issues that may lead to the code.

10. How long does it typically take to repair OBDII code P1FE0 in a Buick Hybrid/EV vehicle?

The repair time can vary based on the exact cause of the issue, availability of parts, and the technician's expertise. In some cases, repairs can be completed in a few hours, while more complex issues may take longer.