AutoCodes – Generic – P1FED

P1FED 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 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 841

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

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

What does this mean?

What are the Possible Causes of the DTC P1FED?

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?

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 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.

Need more information about the P1FED code?

Need more information on how to fix the P1FED code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1FED code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1FED Buick — Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance
P1FED Cadillac — Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance
P1FED Chevrolet — Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance
P1FED GMC — Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance
P1FED Saturn — Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance

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 Code

1. What are common symptoms of OBDII code P1FED related to the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance?

- Common symptoms include poor fuel efficiency, loss of power, and potential issues with starting the vehicle.

2. What are the possible causes of OBDII code P1FED indicating an issue with the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance?

- Potential causes include a faulty voltage sensor, wiring issues, software glitches, or problems with the battery interface control module itself.

3. How can I diagnose the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance issue triggering OBDII code P1FED?

- Diagnosis typically involves using a diagnostic scanner to read the code, checking the voltage sensor's readings, inspecting wiring for damage, and testing the battery interface control module.

4. Is it safe to continue driving with OBDII code P1FED related to the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance?

- It is not recommended to drive with this code present, as it can lead to further damage to the hybrid/EV system and potentially cause safety hazards.

5. Can I reset OBDII code P1FED by simply clearing the code with a scanner?

- While clearing the code may temporarily remove the warning light, it will not fix the underlying issue causing the code. Proper diagnosis and repair are necessary.

6. Are there any repair tips for addressing OBDII code P1FED and the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance problem?

- Repair tips may include checking and cleaning sensor connections, inspecting and repairing damaged wiring, updating software if available, and replacing faulty components as needed.

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

- Repair costs can vary depending on the exact cause of the issue, but they may range from a few hundred to over a thousand dollars, especially if components need replacement.

8. Can a DIY enthusiast without specialized tools or experience fix OBDII code P1FED related to the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance?

- It is recommended to have this issue diagnosed and repaired by a qualified technician due to the complex nature of hybrid/EV systems and the specialized tools required.

9. How long can I safely drive with OBDII code P1FED before addressing the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance problem?

- It is best to address the issue as soon as possible to prevent further damage and potential safety risks associated with the hybrid/EV system.

10. Are there any recalls or technical service bulletins related to OBDII code P1FED and the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Performance issue?

- It is recommended to check with the vehicle manufacturer or authorized dealerships for any relevant recalls or technical service bulletins related to this specific problem.