AutoCodes – Cadillac – P1FC3 Cadillac

P1FC3 Cadillac 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 Cadillac 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 909

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

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 Cadillac?

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 Cadillac 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 Cadillac Code

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

- Common symptoms include illuminated check engine light, reduced hybrid/EV performance, and potential drivability issues.

2. What does the OBDII code P1FC3 indicate in a Cadillac Hybrid/EV vehicle?

- This code specifically refers to a malfunction in the Hybrid/EV Battery Interface Control Module 5 5 V Reference Circuit.

3. What are the possible causes of OBDII code P1FC3 in a Cadillac Hybrid/EV vehicle?

- Potential causes include wiring harness issues, a faulty Hybrid/EV Battery Interface Control Module, or problems with the 5 V reference circuit.

4. How can I diagnose the OBDII code P1FC3 in my Cadillac Hybrid/EV vehicle?

- Diagnosis typically involves using a scan tool to retrieve the code, inspecting the wiring harness for damage, and testing the voltage on the 5 V reference circuit.

5. Can driving with the OBDII code P1FC3 in a Cadillac Hybrid/EV vehicle cause further damage?

- Continuing to drive with this code may lead to reduced hybrid/EV system performance and potential damage to the battery interface control module.

6. How can I repair OBDII code P1FC3 in my Cadillac Hybrid/EV vehicle?

- Repair options may include repairing or replacing damaged wiring, replacing the Hybrid/EV Battery Interface Control Module, or addressing issues with the 5 V reference circuit.

7. Is it safe to continue driving my Cadillac Hybrid/EV with the OBDII code P1FC3 present?

- It is recommended to address the issue promptly to prevent further damage to the hybrid/EV system and ensure optimal performance.

8. Can a DIY enthusiast fix the OBDII code P1FC3 issue in a Cadillac Hybrid/EV vehicle?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this code by following proper diagnostic and repair procedures.

9. How much does it typically cost to repair OBDII code P1FC3 in a Cadillac Hybrid/EV vehicle?

- Repair costs can vary depending on the specific cause of the issue, but expenses may include parts and labor for replacing components or repairing wiring.

10. Are there any preventative measures to avoid encountering OBDII code P1FC3 in a Cadillac Hybrid/EV vehicle?

- Regular maintenance checks, including inspecting the wiring harness and monitoring the hybrid/EV system, can help prevent issues that may trigger this code.