AutoCodes – Buick – P1FEE Buick

P1FEE Buick Code - Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Performance

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: P1FEE Buick indicates Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Performance.
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 798

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 P1FEE 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 P1FEE Buick - Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Performance - AutoCodes.com — P1FEE Buick Code - Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P1FEE 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 P1FEE 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 P1FEE 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 P1FEE Buick Code

1. What are the common symptoms of OBDII code P1FEE in a Buick Hybrid/EV?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential illumination of the check engine light.

2. What can cause the OBDII code P1FEE in a Buick Hybrid/EV?

- This code is typically triggered by issues related to the Hybrid/EV Battery Interface Control Module 6 Voltage Sensor, such as sensor malfunction, wiring problems, or module failure.

3. How serious is the P1FEE code in a Buick Hybrid/EV?

- Ignoring this code can lead to inefficient operation of the hybrid system and potential long-term damage to the vehicle's battery and electrical systems. It is recommended to address the issue promptly.

4. Can I continue driving my Buick with the P1FEE code present?

- It is generally not recommended to continue driving the vehicle with this code active, as it can lead to decreased performance and potential long-term damage to the hybrid system components.

5. How can I diagnose and repair the P1FEE code in my Buick Hybrid/EV?

- Diagnosis typically involves using a professional OBDII scanner to pinpoint the exact cause of the code. Repair may involve replacing the Hybrid/EV Battery Interface Control Module 6 Voltage Sensor, checking wiring connections, or addressing module malfunctions.

6. Are there any DIY tips for troubleshooting the P1FEE code in a Buick Hybrid/EV?

- DIY tips include checking for loose or damaged wiring connections related to the voltage sensor, inspecting the sensor for physical damage, and ensuring proper grounding of the control module.

7. Can a mechanic reset the P1FEE code without fixing the underlying issue?

- While a mechanic can clear the code temporarily, it is crucial to address the root cause of the problem to prevent the code from reoccurring and potentially causing further damage to the vehicle.

8. How much does it cost to repair the P1FEE code in a Buick Hybrid/EV?

- Repair costs can vary depending on the exact cause of the code and the specific components that need to be replaced. It is advisable to consult with a qualified mechanic for an accurate estimate.

9. Is the P1FEE code covered under any warranties for Buick Hybrid/EV owners?

- Depending on the vehicle's warranty coverage, the repair for the P1FEE code may be covered if the issue falls under the warranty terms. It is recommended to check with the manufacturer or dealership for warranty details.

10. Can the P1FEE code affect the overall performance of a Buick Hybrid/EV?

- Yes, the P1FEE code can impact the overall performance of the hybrid system, leading to reduced fuel efficiency, diminished power output, and potential drivability issues. Addressing the code promptly is important to maintain optimal vehicle performance.