AutoCodes – Generic – P1FE3

P1FE3 Code - Hybrid/EV Battery Interface Control Module 5 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: P1FE3 indicates Hybrid/EV Battery Interface Control Module 5 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 951

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 P1FE3 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 P1FE3 - Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FE3 Code - Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FE3?

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 P1FE3?

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 P1FE3 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 P1FE3 code?

Need more information on how to fix the P1FE3 code? Get Access to Factory Service Manuals

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Information for Specific Makes

P1FE3 Buick — Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Circuit High Voltage
P1FE3 Cadillac — Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Circuit High Voltage
P1FE3 Chevrolet — Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Circuit High Voltage
P1FE3 GMC — Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Circuit High Voltage
P1FE3 Saturn — Hybrid/EV Battery Interface Control Module 5 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 P1FE3 Code

1. What are the common symptoms of OBDII code P1FE3?

- Common symptoms of code P1FE3 include illuminated check engine light, reduced fuel efficiency, and potential drivability issues in hybrid or electric vehicles.

2. What can cause the Hybrid/EV Battery Interface Control Module 5 Voltage Sensor Circuit High Voltage fault code?

- The P1FE3 code can be triggered by a malfunction in the voltage sensor circuit within the Hybrid/EV Battery Interface Control Module 5, often due to wiring issues, sensor failure, or module defects.

3. How serious is the P1FE3 fault code?

- While the P1FE3 code may not immediately impact vehicle safety, it can lead to performance issues and potential damage to the hybrid or electric vehicle's battery system if left untreated.

4. Can I still drive my vehicle with the P1FE3 code present?

- It is not recommended to continue driving the vehicle with the P1FE3 code illuminated, as it can lead to further damage to the hybrid or electric battery system. It is advisable to have the issue diagnosed and repaired promptly.

5. How can I diagnose and repair the P1FE3 fault code?

- Diagnosing and repairing the P1FE3 code typically involves using a professional OBDII scanner to identify the specific cause of the voltage sensor circuit high voltage issue. Repair may involve checking and repairing wiring, replacing faulty sensors, or addressing module issues.

6. Is it safe to reset the OBDII code P1FE3 myself?

- While you can reset the P1FE3 code using an OBDII scanner, it is important to address the underlying issue causing the fault code to prevent further damage to the vehicle's battery system. If you are unsure, it is best to seek professional assistance.

7. Can a DIY enthusiast fix the P1FE3 code at home?

- Depending on the root cause of the P1FE3 code, DIY enthusiasts with automotive repair experience may be able to address the issue by checking wiring connections, replacing sensors, or resetting the code. However, complex electrical issues may require professional expertise.

8. How much does it cost to repair the P1FE3 fault code?

- The cost to repair the P1FE3 code can vary depending on the underlying cause of the issue, parts needed for replacement, and labor costs. It is advisable to obtain quotes from automotive professionals for an accurate estimate.

9. How can I prevent the P1FE3 fault code from recurring?

- To prevent the P1FE3 fault code from recurring, regular maintenance of the hybrid or electric vehicle's battery system is essential. Ensuring proper wiring connections, monitoring sensor performance, and addressing issues promptly can help prevent future occurrences.

10. Is the P1FE3 fault code specific to certain vehicle makes and models?

- The P1FE3 fault code is specific to hybrid and electric vehicles equipped with the Hybrid/EV Battery Interface Control Module 5. It may vary in relevance across different vehicle manufacturers and models utilizing similar systems.