AutoCodes – GMC – P1FEC GMC

P1FEC GMC Code - Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance

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: P1FEC GMC indicates Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance.
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 727

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 P1FEC 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 P1FEC GMC - Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance - AutoCodes.com — P1FEC GMC Code - Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P1FEC 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 P1FEC 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 P1FEC 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 P1FEC GMC code?

Need more information on how to fix the P1FEC GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1FEC 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 P1FEC GMC Code

1. What are the common symptoms of OBDII code P1FEC GMC related to Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance?

- Common symptoms include decreased fuel efficiency, reduced power, and potential illumination of the check engine light.

2. What are the possible causes of OBDII code P1FEC GMC indicating an issue with the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance?

- Possible causes may include a faulty voltage sensor, wiring issues, software glitches, or problems with the battery control module.

3. How can I diagnose the OBDII code P1FEC GMC related to Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance?

- Diagnosis typically involves using a scan tool to retrieve the specific code, checking the voltage sensor readings, inspecting wiring for damage, and testing the battery control module.

4. What are some repair tips for addressing OBDII code P1FEC GMC concerning Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance?

- Repair tips may include replacing the faulty voltage sensor, repairing or replacing damaged wiring, updating software if necessary, or replacing the battery control module.

5. Is it safe to continue driving with OBDII code P1FEC GMC triggered by issues with the Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance?

- It is not recommended to continue driving with this code present, as it can potentially lead to further damage and affect the performance of the hybrid or electric vehicle system.

6. Can resetting the OBDII code P1FEC GMC related to Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance solve the issue?

- While clearing the code may temporarily turn off the check engine light, it will not fix the underlying problem causing the code to trigger. Proper diagnosis and repairs are necessary.

7. How much does it typically cost to repair OBDII code P1FEC GMC associated with Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance?

- The repair cost can vary depending on the specific issue causing the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Are there any preventive measures to avoid encountering OBDII code P1FEC GMC related to Hybrid/EV Battery Interface Control Module 4 Voltage Sensor Performance?

- Regular maintenance, such as checking the battery system, inspecting wiring for damage, and keeping software up to date, can help prevent issues leading to this code.