AutoCodes – GMC – P1FC5 GMC

P1FC5 GMC 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 GMC 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 781

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

Need more information about the P1FC5 GMC code?

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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 P1FC5 GMC Code

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

- Common symptoms include reduced hybrid/EV system performance, illuminated warning lights on the dashboard, and potential issues with the battery management system.

2. What can cause OBDII code P1FC5 to trigger in a GMC?

- The code P1FC5 can be triggered by a malfunction in the Hybrid/EV Battery Interface Control Module, a fault in the 7.5V reference circuit, or issues with the battery interface control module communication.

3. How can I diagnose the OBDII code P1FC5 in my GMC?

- Diagnosis involves using a professional OBDII scanner to read the code, checking the health of the hybrid/EV battery system, inspecting wiring for any damage, and testing the 7.5V reference circuit for proper voltage levels.

4. What are the potential repair tips for addressing code P1FC5 in a GMC?

- Repair tips may include repairing or replacing damaged wiring, recalibrating the Hybrid/EV Battery Interface Control Module, updating software/firmware, and ensuring proper connections in the 7.5V reference circuit.

5. Is it safe to continue driving my GMC with OBDII code P1FC5 present?

- It is not recommended to drive the vehicle with the code P1FC5 present, as it can lead to further damage to the hybrid/EV system and potential safety hazards. It's best to address the issue promptly.

6. Can a DIY enthusiast fix OBDII code P1FC5 in a GMC?

- While some basic checks like inspecting wiring connections can be done by DIY enthusiasts, diagnosing and repairing complex issues related to the Hybrid/EV system should be left to experienced technicians.

7. How much does it typically cost to repair OBDII code P1FC5 in a GMC?

- The cost of repairs can vary depending on the root cause of the issue. It's advisable to consult a professional technician for an accurate diagnosis and cost estimate for resolving code P1FC5.

8. Will resetting the OBDII system clear code P1FC5 in a GMC?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing code P1FC5 is not addressed, the code is likely to return. It's essential to diagnose and repair the root cause.

9. What are the long-term implications of ignoring OBDII code P1FC5 in a GMC?

- Ignoring OBDII code P1FC5 can lead to decreased hybrid/EV system efficiency, potential battery issues, and even system failure over time. It's crucial to address the code promptly to prevent further damage.

10. Can weather conditions affect the triggering of OBDII code P1FC5 in a GMC?

- Extreme weather conditions, such as temperature fluctuations, humidity, or water exposure, can potentially impact the Hybrid/EV Battery Interface Control Module and the 7.5V reference circuit, leading to the triggering of code P1FC5.