AutoCodes – GMC – P1FC3 GMC

P1FC3 GMC Code - Hybrid/EV Battery Interface Control Module 5 5 V Reference Circuit

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: P1FC3 GMC indicates Hybrid/EV Battery Interface Control Module 5 5 V Reference Circuit.
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 821

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 P1FC3 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 P1FC3 GMC - Hybrid/EV Battery Interface Control Module 5 5 V Reference Circuit - AutoCodes.com — P1FC3 GMC Code - Hybrid/EV Battery Interface Control Module 5 5 V Reference Circuit

What does this mean?

What are the Possible Causes of the DTC P1FC3 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 P1FC3 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 P1FC3 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 P1FC3 GMC Code

1. What are the common symptoms of OBDII code P1FC3 in a GMC hybrid/EV vehicle?

Common symptoms include illuminated check engine light, reduced performance, difficulty starting the vehicle, and potential issues with the hybrid/EV battery system.

2. What could be the possible causes of OBDII code P1FC3 in a GMC hybrid/EV vehicle?

Possible causes may include a faulty Hybrid/EV Battery Interface Control Module, damaged wiring or connectors in the 5 V reference circuit, or issues with the hybrid/EV battery itself.

3. How can I diagnose the OBDII code P1FC3 in my GMC hybrid/EV vehicle?

Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault code, inspecting the Hybrid/EV Battery Interface Control Module and related wiring, and testing the 5 V reference circuit for proper voltage.

4. Is it safe to continue driving my GMC hybrid/EV vehicle with OBDII code P1FC3 present?

It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the hybrid/EV system and potential safety hazards. It's best to have the issue diagnosed and repaired promptly.

5. Can I repair OBDII code P1FC3 in my GMC hybrid/EV vehicle myself?

While some DIY enthusiasts may attempt to diagnose and repair this code, due to the complexity of hybrid/EV systems, it is recommended to seek professional help from a certified technician with experience in hybrid/EV vehicles.

6. How much does it typically cost to repair OBDII code P1FC3 in a GMC hybrid/EV vehicle?

The cost of repair can vary depending on the specific issue causing the code, the labor rates of the repair shop, and the cost of any replacement parts needed. It's best to get a few quotes from different shops for an accurate estimate.

7. Are there any preventive maintenance tips to avoid OBDII code P1FC3 in a GMC hybrid/EV vehicle?

Regularly scheduled maintenance, such as checking and maintaining the hybrid/EV battery system, inspecting wiring for damage, and keeping up with recommended service intervals, can help prevent issues that may trigger this code.

8. Can OBDII code P1FC3 in a GMC hybrid/EV vehicle cause damage to other components?

If left unresolved, this code can potentially lead to damage to other components in the hybrid/EV system, such as the hybrid battery, control modules, or wiring harnesses. It's important to address the issue promptly to prevent further damage.

9. How long does it typically take to repair OBDII code P1FC3 in a GMC hybrid/EV vehicle?

The repair time can vary depending on the exact cause of the code and the availability of parts. In some cases, it may be a relatively quick fix, while in others, it may require more extensive diagnostic work and repairs.

10. Can resetting the OBDII code P1FC3 in my GMC hybrid/EV vehicle make it go away permanently?

Simply resetting the code without addressing the underlying issue will not make it go away permanently. It's essential to diagnose the root cause of the code and perform the necessary repairs to ensure it doesn't reoccur.