AutoCodes – Generic – P1FC5

P1FC5 Code - Hybrid/EV Battery Interface Control Module 7 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: P1FC5 indicates Hybrid/EV Battery Interface Control Module 7 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 926

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 P1FC5 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 P1FC5 - Hybrid/EV Battery Interface Control Module 7 5 V Reference Circuit - AutoCodes.com — P1FC5 Code - Hybrid/EV Battery Interface Control Module 7 5 V Reference Circuit

What does this mean?

What are the Possible Causes of the DTC P1FC5?

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 P1FC5?

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 P1FC5 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

P1FC5 Buick — Hybrid/EV Battery Interface Control Module 7 5 V Reference Circuit
P1FC5 Cadillac — Hybrid/EV Battery Interface Control Module 7 5 V Reference Circuit
P1FC5 Chevrolet — Hybrid/EV Battery Interface Control Module 7 5 V Reference Circuit
P1FC5 GMC — Hybrid/EV Battery Interface Control Module 7 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 P1FC5 Code

1. What are common symptoms of OBDII code P1FC5 related to the Hybrid/EV Battery Interface Control Module 7 5 V Reference Circuit?

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

2. What can cause the OBDII code P1FC5 to trigger in relation to the Hybrid/EV Battery Interface Control Module?

- The code P1FC5 can be triggered by issues such as wiring faults, damaged connectors, or a malfunctioning Hybrid/EV Battery Interface Control Module.

3. How can I diagnose the OBDII code P1FC5 for the Hybrid/EV Battery Interface Control Module issue?

- Diagnosis involves using a scan tool to retrieve the code, inspecting the wiring and connectors for damage, and testing the Hybrid/EV Battery Interface Control Module.

4. Are there any repair tips for fixing the OBDII code P1FC5 associated with the Hybrid/EV Battery Interface Control Module?

- Repair tips may include repairing or replacing damaged wiring, ensuring proper connections, and replacing the Hybrid/EV Battery Interface Control Module if necessary.

5. Can a DIY enthusiast address the OBDII code P1FC5 related to the Hybrid/EV Battery Interface Control Module?

- While some basic inspections and repairs can be done by DIY enthusiasts, diagnosing and repairing complex issues with the Hybrid/EV system may require professional assistance.

6. Are there any safety precautions to keep in mind when dealing with the Hybrid/EV Battery Interface Control Module issue?

- It is important to disconnect the vehicle's hybrid/EV system properly before working on any components to prevent electrical hazards or damage to the system.

7. How critical is it to address the OBDII code P1FC5 for the Hybrid/EV Battery Interface Control Module promptly?

- Promptly addressing the code is crucial to prevent further damage to the hybrid/EV system and ensure optimal performance and efficiency of the vehicle.

8. Can the OBDII code P1FC5 related to the Hybrid/EV Battery Interface Control Module cause long-term damage if left unresolved?

- Ignoring the code P1FC5 can potentially lead to further issues with the hybrid/EV system, decreased fuel efficiency, and other performance problems over time.

9. Are there any recalls or technical service bulletins related to the OBDII code P1FC5 for the Hybrid/EV Battery Interface Control Module?

- It is recommended to check with the vehicle manufacturer or authorized dealerships for any recalls or technical service bulletins related to this specific OBDII code.

10. Is it necessary to reset the OBDII code P1FC5 after repairing the issue with the Hybrid/EV Battery Interface Control Module?

- Yes, it is recommended to clear the code using a scan tool after repairing the issue to reset the system and ensure the check engine light does not reappear.