AutoCodes – GMC – P1FE2 GMC

P1FE2 GMC Code - Hybrid/EV Battery Interface Control Module 4 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: P1FE2 GMC indicates Hybrid/EV Battery Interface Control Module 4 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 945

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 P1FE2 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 P1FE2 GMC - Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FE2 GMC Code - Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FE2 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 P1FE2 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 P1FE2 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 P1FE2 GMC Code

1. What are the common symptoms of OBDII code P1FE2 in a GMC related to the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- Common symptoms include the check engine light illuminating, decreased fuel efficiency, reduced power, and potential drivability issues.

2. What are the possible causes of OBDII code P1FE2 in a GMC indicating an issue with the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- Possible causes may include a faulty voltage sensor, damaged wiring or connectors, issues with the battery control module, or a malfunction in the high voltage system.

3. How can I diagnose the underlying issue causing OBDII code P1FE2 in my GMC related to the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- Diagnosing the issue may involve performing a thorough inspection of the high voltage system components, checking for damaged wiring, testing the voltage sensor, and using a diagnostic scanner to gather data from the battery control module.

4. What are some repair tips for addressing OBDII code P1FE2 in a GMC linked to the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- Repair tips may include repairing or replacing damaged wiring or connectors, testing and replacing the faulty voltage sensor, resetting the battery control module, and ensuring proper connections and grounds in the high voltage system.

5. Is it safe to continue driving my GMC with OBDII code P1FE2 related to the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- It is not recommended to continue driving the vehicle with this code present, as it may lead to further damage to the high voltage system and potentially unsafe driving conditions. Seek professional diagnosis and repair promptly.

6. Can resetting the OBDII system clear the P1FE2 trouble code in my GMC signaling an issue with the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the fault code is not addressed, it is likely to reappear. It is important to diagnose and repair the root cause of the problem.

7. How does the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage work in a GMC, and what is its role in the vehicle's operation?

- The voltage sensor circuit in the Hybrid/EV Battery Interface Control Module 4 is responsible for monitoring and regulating the high voltage in the hybrid or electric vehicle system, ensuring proper functioning and safety of the high voltage components.

8. What are the potential risks associated with ignoring OBDII code P1FE2 in a GMC indicating a problem with the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- Ignoring this fault code can lead to further damage to the high voltage system, potential safety hazards, reduced vehicle performance, and increased repair costs if not addressed promptly.

9. Are there any recalls or technical service bulletins (TSBs) related to OBDII code P1FE2 in GMC vehicles with issues concerning the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage?

- It is recommended to check with the manufacturer or a GMC dealership for any recalls or TSBs related to this specific fault code to determine if there are known issues or recommended repair procedures.

10. How can I prevent OBDII code P1FE2 from occurring in my GMC related to the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Circuit High Voltage in the future?

- Regular maintenance, proper handling of high voltage components, prompt attention to any warning lights or symptoms, and ensuring the high voltage system is inspected during routine service intervals can help prevent this code from reoccurring.