AutoCodes – GMC – P1FE1 GMC

P1FE1 GMC Code - Hybrid/EV Battery Interface Control Module 3 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: P1FE1 GMC indicates Hybrid/EV Battery Interface Control Module 3 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 940

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 P1FE1 GMC 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 P1FE1 GMC - Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FE1 GMC Code - Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FE1 GMC?

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 P1FE1 GMC?

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 P1FE1 GMC 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 P1FE1 GMC Code

1. What are common symptoms of OBDII code P1FE1 in a GMC vehicle?

- Common symptoms include the Check Engine Light illuminating, reduced hybrid/EV system performance, and potential drivability issues.

2. What does the OBDII code P1FE1 in a GMC indicate?

- The code P1FE1 indicates a high voltage condition in the Hybrid/EV Battery Interface Control Module 3 Voltage Sensor Circuit.

3. What are possible causes of OBDII code P1FE1 in a GMC?

- Possible causes include a faulty Hybrid/EV Battery Interface Control Module, wiring issues, high voltage battery problems, or a malfunctioning voltage sensor.

4. How serious is the OBDII code P1FE1 in a GMC?

- The code P1FE1 should be addressed promptly as it can affect the performance and safety of the hybrid/EV system in the vehicle.

5. Can I continue driving my GMC with the OBDII code P1FE1 present?

- It is recommended to avoid driving the vehicle with the code P1FE1 present to prevent further damage to the hybrid/EV system.

6. How can I diagnose the OBDII code P1FE1 in my GMC?

- Diagnosis typically involves using a diagnostic scan tool to retrieve the code, followed by inspecting the hybrid/EV battery system components and wiring for any issues.

7. What are some repair tips for fixing OBDII code P1FE1 in a GMC?

- Repair tips may include checking and repairing any damaged wiring, replacing the Hybrid/EV Battery Interface Control Module if necessary, and resetting the fault codes.

8. Can I reset the OBDII code P1FE1 in my GMC without repairs?

- While clearing the code may temporarily turn off the Check Engine Light, it is important to address the underlying issue to prevent the code from reoccurring.

9. Is it possible to prevent OBDII code P1FE1 from appearing in my GMC?

- Regular maintenance of the hybrid/EV system, including checking the battery components and wiring, can help prevent issues that trigger the P1FE1 code.

10. How much does it typically cost to repair OBDII code P1FE1 in a GMC?

- Repair costs can vary depending on the specific cause of the code, but expenses may include parts replacement, labor fees, and diagnostic charges, potentially ranging from a few hundred to over a thousand dollars.