AutoCodes – Buick – P1FEB Buick

P1FEB Buick Code - Hybrid/EV Battery Interface Control Module 3 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: P1FEB Buick indicates Hybrid/EV Battery Interface Control Module 3 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 804

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 P1FEB 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 P1FEB Buick - Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance - AutoCodes.com — P1FEB Buick Code - Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P1FEB 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 P1FEB 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 P1FEB 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 P1FEB Buick Code

1. What are common symptoms of OBDII code P1FEB in a Buick related to the Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance?

- Common symptoms include decreased fuel efficiency, loss of power, and illumination of the check engine light.

2. What are possible causes of OBDII code P1FEB in a Buick related to the Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance?

- Possible causes include a faulty voltage sensor, wiring issues, or problems with the hybrid battery system.

3. How can I diagnose the issue related to OBDII code P1FEB in a Buick related to the Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance?

- Diagnostic steps may include checking the voltage sensor for proper operation, inspecting the wiring for damage, and testing the hybrid battery system.

4. Can I continue driving my Buick with OBDII code P1FEB related to the Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the hybrid system.

5. How can I repair OBDII code P1FEB in a Buick related to the Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance?

- Repair may involve replacing the faulty voltage sensor, repairing any damaged wiring, or addressing issues with the hybrid battery system as needed.

6. Are there any safety concerns associated with OBDII code P1FEB in a Buick related to the Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance?

- Yes, there may be safety concerns, especially if the issue affects the performance of the hybrid system. It is important to address the problem promptly.

7. Can a DIY enthusiast fix OBDII code P1FEB in a Buick related to the Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance?

- Depending on the specific issue, DIY enthusiasts with experience in automotive repair may be able to address the problem. However, it is recommended to consult a professional for complex hybrid system issues.

8. Will resetting the OBDII code P1FEB related to the Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance make it go away permanently?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to reappear.

9. How much does it typically cost to repair OBDII code P1FEB in a Buick related to the Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance?

- Repair costs can vary depending on the specific issue, but they may range from a few hundred to over a thousand dollars, especially if components need to be replaced.

10. Can extreme weather conditions affect the occurrence of OBDII code P1FEB in a Buick related to the Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Performance?

- Yes, extreme temperatures can impact the performance of the hybrid system and sensors, potentially leading to the triggering of this code.