AutoCodes – GMC – P1FE7 GMC

P1FE7 GMC Code - Hybrid/EV Battery Interface Control Module 9 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: P1FE7 GMC indicates Hybrid/EV Battery Interface Control Module 9 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.

Save to My Repairs My Repairs

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

Code Popularity 937

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 P1FE7 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 P1FE7 GMC - Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Circuit High Voltage - AutoCodes.com — P1FE7 GMC Code - Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1FE7 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 P1FE7 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 P1FE7 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.

Need more information about the P1FE7 GMC code?

Need more information on how to fix the P1FE7 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1FE7 GMC code diagnosed by a professional: Find a repair shop in your area

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 P1FE7 GMC Code

1. What are the common symptoms of OBDII code P1FE7 in a GMC vehicle?

- Common symptoms include the check engine light illuminating, reduced hybrid/EV performance, and potential issues with the battery interface control module.

2. What can cause the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Circuit High Voltage code in a GMC?

- This code is typically triggered by a high voltage reading from the voltage sensor, which may be due to a faulty sensor, damaged wiring, or issues with the hybrid/EV battery system.

3. How serious is the P1FE7 OBDII code in a GMC hybrid or EV vehicle?

- This code should be addressed promptly as it can affect the performance and efficiency of the hybrid or EV system. Ignoring the issue may lead to further damage and potential safety concerns.

4. Can I continue driving my GMC vehicle with the P1FE7 fault code?

- It is not recommended to continue driving with the P1FE7 code present, as it can impact the functionality of the hybrid/EV system and may lead to further damage. It's best to have the vehicle diagnosed and repaired as soon as possible.

5. How can I diagnose and repair the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Circuit High Voltage code?

- Diagnosing and repairing this code may require specialized equipment and knowledge of hybrid/EV systems. It is recommended to consult a professional mechanic or dealership with experience in hybrid vehicle repair.

6. Are there any DIY tips for troubleshooting the P1FE7 code in a GMC hybrid or EV?

- While basic checks like inspecting the wiring harness and connectors can be done, diagnosing and repairing issues related to the hybrid/EV system should be left to experienced professionals to ensure proper diagnosis and repair.

7. How much does it typically cost to repair the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Circuit High Voltage fault in a GMC?

- The cost of repairs for the P1FE7 code can vary depending on the extent of the issue, parts needed, and labor costs. It's best to get a diagnostic from a qualified technician for an accurate estimate.

8. Will resetting the OBDII code P1FE7 in a GMC clear the issue permanently?

- Simply resetting the code may clear the check engine light temporarily, but the underlying issue causing the P1FE7 code will likely resurface if not properly diagnosed and repaired.

9. Can a faulty battery cause the P1FE7 fault code to appear in a GMC hybrid or EV vehicle?

- While a faulty battery could potentially affect the hybrid/EV system, the P1FE7 code specifically relates to the voltage sensor circuit in the battery interface control module. It's best to have the system diagnosed to pinpoint the exact cause.

10. Is the Hybrid/EV Battery Interface Control Module 9 Voltage Sensor Circuit High Voltage fault a common issue in GMC hybrid vehicles?

- While not extremely common, issues with the voltage sensor circuit can occur in GMC hybrid vehicles, especially as they age. Regular maintenance and inspections can help prevent such faults.