AutoCodes – Generic – P1FC3

P1FC3 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 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 980

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

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?

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 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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Information for Specific Makes

P1FC3 Buick — Hybrid/EV Battery Interface Control Module 5 5 V Reference Circuit
P1FC3 Cadillac — Hybrid/EV Battery Interface Control Module 5 5 V Reference Circuit
P1FC3 Chevrolet — Hybrid/EV Battery Interface Control Module 5 5 V Reference Circuit
P1FC3 GMC — Hybrid/EV Battery Interface Control Module 5 5 V Reference Circuit

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 Code

1. What are the common symptoms of OBDII code P1FC3 related to the Hybrid/EV Battery Interface Control Module 5 5 V Reference Circuit?

- Common symptoms include illuminated Check Engine Light, reduced hybrid/EV drive performance, and potential issues with the battery management system.

2. What are the typical causes of OBDII code P1FC3 in relation to the Hybrid/EV Battery Interface Control Module?

- The code P1FC3 can be triggered by issues such as a faulty battery interface control module, damaged wiring in the 5V reference circuit, or a malfunctioning sensor.

3. How can I diagnose the OBDII code P1FC3 for the Hybrid/EV Battery Interface Control Module?

- Diagnosis involves using a scan tool to retrieve the code, checking the battery interface control module and related components for any visible damage or corrosion, and testing the 5V reference circuit for proper voltage.

4. What are some repair tips for addressing OBDII code P1FC3 on the Hybrid/EV Battery Interface Control Module?

- Repair tips may include repairing or replacing damaged wiring in the 5V reference circuit, replacing the battery interface control module if faulty, and ensuring all connections are secure and free of corrosion.

5. Can driving with OBDII code P1FC3 present any risks to the vehicle or driver?

- Driving with this code may result in reduced hybrid/EV performance and potential battery management issues. It is recommended to address the code promptly to prevent further complications.

6. How critical is it to address OBDII code P1FC3 related to the Hybrid/EV Battery Interface Control Module?

- It is important to address this code promptly to ensure the proper functioning of the hybrid/EV system and to prevent potential damage to the battery or other components.

7. Are there any common related codes that may accompany OBDII code P1FC3?

- Other related codes that may accompany P1FC3 include codes related to the battery management system, sensor malfunctions, or communication errors within the hybrid/EV system.

8. Can a DIY enthusiast repair OBDII code P1FC3 on the Hybrid/EV Battery Interface Control Module?

- Depending on their skill level and access to tools, a DIY enthusiast may be able to address this code by following repair guides, but professional diagnosis and repair are recommended for complex electrical issues.

9. Is it necessary to clear the OBDII code P1FC3 after repairing the issue with the Hybrid/EV Battery Interface Control Module?

- Yes, it is recommended to clear the code after repairing the underlying issue to reset the Check Engine Light and ensure that the repair was successful.

10. How can regular maintenance help prevent OBDII code P1FC3 from occurring in the Hybrid/EV Battery Interface Control Module?

- Regular maintenance, including checking the battery system, monitoring for any warning signs, and addressing issues promptly, can help prevent the occurrence of code P1FC3 and other related problems.