AutoCodes – Buick – P1FED Buick

P1FED Buick Code - Hybrid/EV Battery Interface Control Module 5 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: P1FED Buick indicates Hybrid/EV Battery Interface Control Module 5 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 917

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 P1FED 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 P1FED Buick - Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance - AutoCodes.com — P1FED Buick Code - Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P1FED 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 P1FED 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 P1FED 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 P1FED Buick Code

1. What are the common symptoms of OBDII code P1FED in a Buick Hybrid/EV vehicle?

- Common symptoms include decreased fuel efficiency, reduced power or acceleration, illuminated check engine light, and potential issues with the hybrid/EV battery system.

2. What could cause the OBDII code P1FED related to the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance in a Buick?

- Possible causes include a faulty voltage sensor, wiring or connection issues, a malfunctioning control module, or problems with the hybrid/EV battery itself.

3. How can I diagnose the OBDII code P1FED in my Buick Hybrid/EV vehicle?

- Diagnosis typically involves using a scan tool to read the code, checking the voltage sensor and its connections, inspecting the battery interface control module, and testing the hybrid/EV battery for any issues.

4. What repairs may be needed to fix the OBDII code P1FED in a Buick Hybrid/EV car?

- Repairs might involve replacing the faulty voltage sensor, repairing any damaged wiring or connections, recalibrating or replacing the control module, or addressing any issues with the hybrid/EV battery components.

5. Can driving with the OBDII code P1FED present cause further damage to my Buick Hybrid/EV vehicle?

- Continuing to drive with this code present can potentially cause damage to the hybrid/EV battery system, lead to decreased performance, and may result in further issues with the vehicle's drivability.

6. Are there any safety concerns associated with the OBDII code P1FED in a Buick Hybrid/EV car?

- While the code itself may not pose immediate safety risks, addressing the underlying issue promptly is crucial to ensure the continued safe operation of the hybrid/EV system and the vehicle overall.

7. How much does it typically cost to repair the OBDII code P1FED related to the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance in a Buick?

- Repair costs can vary depending on the specific cause of the issue, the extent of the repairs needed, and whether any components require replacement. It is advisable to consult with a professional technician for an accurate estimate.

8. Can I reset the OBDII code P1FED in my Buick Hybrid/EV car on my own?

- While you can clear the code using a scan tool, it is essential to address the underlying problem to prevent the code from reappearing. Resetting the code without resolving the issue may lead to ongoing performance issues.

9. Is it possible to prevent the OBDII code P1FED from occurring in my Buick Hybrid/EV vehicle?

- Regular maintenance, such as checking the hybrid/EV system components, ensuring proper wiring connections, and monitoring the overall health of the battery system, can help prevent issues that may trigger this code.

10. How long does it typically take to repair the OBDII code P1FED related to the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance in a Buick?

- Repair times can vary depending on the specific problem, the availability of parts, and the technician's experience. Some repairs may be completed within a few hours, while more complex issues could take longer to address.