AutoCodes – Generic – P1FE4

P1FE4 Code - Hybrid/EV Battery Interface Control Module 6 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: P1FE4 indicates Hybrid/EV Battery Interface Control Module 6 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 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 P1FE4 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 P1FE4 - Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FE4 Code - Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FE4?

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 P1FE4?

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 P1FE4 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 P1FE4 code?

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Need Help with the Code?

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Information for Specific Makes

P1FE4 Buick — Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Circuit High Voltage
P1FE4 Cadillac — Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Circuit High Voltage
P1FE4 Chevrolet — Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Circuit High Voltage
P1FE4 GMC — Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Circuit High Voltage
P1FE4 Saturn — Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Circuit High Voltage

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 P1FE4 Code

1. What are the common symptoms of OBDII code P1FE4?

- Common symptoms include the illumination of the check engine light, decreased fuel efficiency, and potential issues with the hybrid/EV system's performance.

2. What causes the Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Circuit High Voltage code P1FE4?

- The P1FE4 code is typically caused by a malfunction in the voltage sensor circuit within the Hybrid/EV battery interface control module 6, leading to high voltage readings.

3. Can driving with OBDII code P1FE4 cause further damage to the vehicle?

- It is recommended to address the P1FE4 code promptly to prevent potential damage to the hybrid/EV system components and ensure optimal vehicle performance.

4. How can I diagnose the Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Circuit High Voltage issue?

- Diagnosing the P1FE4 code may require specialized diagnostic equipment to test the voltage sensor circuit, inspect wiring for damage, and check for any loose connections.

5. Are there any safety precautions to consider when dealing with OBDII code P1FE4?

- When working on the hybrid/EV system related to the P1FE4 code, it is essential to follow proper safety protocols and, if unsure, consult a professional technician.

6. How can I repair OBDII code P1FE4?

- Repairing the P1FE4 code may involve replacing the faulty Hybrid/EV battery interface control module 6, repairing the voltage sensor circuit, or addressing any underlying wiring issues.

7. Can a DIY enthusiast fix the Hybrid/EV Battery Interface Control Module 6 Voltage Sensor Circuit High Voltage problem?

- While some DIY enthusiasts may have the skills to diagnose and address the P1FE4 code, due to the complexity of hybrid/EV systems, it is recommended to seek professional assistance for proper repair.

8. Will resetting the OBDII code P1FE4 make it go away permanently?

- Simply resetting the code may temporarily turn off the check engine light, but if the underlying issue causing the P1FE4 code is not resolved, the code is likely to reappear.

9. How much does it cost to fix OBDII code P1FE4 at a repair shop?

- The cost of fixing the P1FE4 code can vary depending on the extent of the issue, parts needed for repair, and labor costs. It's advisable to obtain quotes from reputable repair shops.

10. Is it safe to continue driving with the check engine light on due to OBDII code P1FE4?

- While the vehicle may still be operational with the check engine light on, it is best to address the P1FE4 code promptly to avoid potential damage and ensure the vehicle's optimal performance.