AutoCodes – Buick – P1FC6 Buick

P1FC6 Buick Code - Hybrid/EV Battery Interface Control Module 8 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: P1FC6 Buick indicates Hybrid/EV Battery Interface Control Module 8 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 691

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 P1FC6 Buick 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 P1FC6 Buick - Hybrid/EV Battery Interface Control Module 8 5 V Reference Circuit - AutoCodes.com — P1FC6 Buick Code - Hybrid/EV Battery Interface Control Module 8 5 V Reference Circuit

What does this mean?

What are the Possible Causes of the DTC P1FC6 Buick?

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 P1FC6 Buick?

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 P1FC6 Buick 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 P1FC6 Buick Code

1. What are common symptoms of OBDII code P1FC6 in a Buick related to the Hybrid/EV Battery Interface Control Module 8 5 V Reference Circuit?

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

2. What can cause OBDII code P1FC6 to trigger in a Buick's Hybrid/EV Battery Interface Control Module?

- The code P1FC6 can be triggered by issues such as a faulty battery interface control module, damaged wiring, or a malfunctioning sensor within the hybrid/EV system.

3. How serious is OBDII code P1FC6 in a Buick Hybrid/EV system?

- OBDII code P1FC6 can affect the performance and efficiency of the hybrid/EV system in a Buick, potentially leading to decreased fuel economy and drivability issues if left unrepaired.

4. Can I continue driving my Buick with OBDII code P1FC6 present?

- It is not recommended to continue driving your Buick with OBDII code P1FC6 present, as it can lead to further damage to the hybrid/EV system and potentially cause safety concerns.

5. How can I diagnose and repair OBDII code P1FC6 in my Buick Hybrid/EV system?

- Diagnosis typically involves using a scan tool to identify the specific cause of the code, such as testing the battery interface control module, inspecting wiring, and checking sensor functionality. Repairs may involve replacing faulty components or repairing damaged wiring.

6. Are there any DIY repair tips for addressing OBDII code P1FC6 in a Buick?

- DIY repair for OBDII code P1FC6 may be challenging due to the specialized nature of hybrid/EV systems. It is recommended to consult a qualified mechanic or dealership for proper diagnosis and repair.

7. How much does it cost to fix OBDII code P1FC6 in a Buick Hybrid/EV system?

- The cost of fixing OBDII code P1FC6 can vary depending on the specific cause of the issue, the cost of parts needed for repair, and labor rates. It is advisable to obtain estimates from automotive professionals.

8. Can OBDII code P1FC6 be a recurring issue in a Buick Hybrid/EV system?

- OBDII code P1FC6 can be a recurring issue if the underlying cause is not properly diagnosed and repaired. Regular maintenance and prompt attention to any related symptoms can help prevent recurrence.

9. Will resetting the OBDII system clear the P1FC6 code in a Buick?

- Resetting the OBDII system may temporarily clear the P1FC6 code, but it is likely to reappear if the underlying issue in the Hybrid/EV Battery Interface Control Module is not addressed.

10. How can I prevent OBDII code P1FC6 from occurring in my Buick Hybrid/EV system?

- Preventative measures include regular maintenance of the hybrid/EV system, prompt attention to any warning lights or symptoms, and avoiding driving habits that can strain the system.