AutoCodes – GMC – P1FAA GMC

P1FAA GMC Code - Hybrid/EV Battery Interface Control Module 9 Not Programmed

Quick Answer

When the Battery Energy Control Module is flash programmed, the Hybrid/EV Battery Interface Control Module operating software and calibrations are provided to the Battery Energy Control Module. Common causes include Reprogram Hybrid/EV Battery Interface Control Module, Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted. 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: P1FAA GMC indicates Hybrid/EV Battery Interface Control Module 9 Not Programmed.
Common causes: Common causes include Reprogram Hybrid/EV Battery Interface Control Module, Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted.
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 786

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 P1FAA GMC Description

When the Battery Energy Control Module is flash programmed, the Hybrid/EV Battery Interface Control Module operating software and calibrations are provided to the Battery Energy Control Module. The Hybrid/EV Battery Interface Control Module software and calibrations are then loaded to each of the Hybrid/EV Battery Interface Control Modules from the Battery Energy Control Module. This operation is automatic and requires no operator action. At this point, if any of the Hybrid/EV Battery Interface Control Modules are not programmed correctly, the appropriate DTC is set.
This fault is internal to the Hybrid/EV Battery Interface Control Modules and no external circuits are involved.

OBDII Code P1FAA GMC - Hybrid/EV Battery Interface Control Module 9 Not Programmed - AutoCodes.com — P1FAA GMC Code - Hybrid/EV Battery Interface Control Module 9 Not Programmed

What does this mean?

What are the Possible Causes of the DTC P1FAA GMC?

Reprogram Hybrid/EV Battery Interface Control Module
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 P1FAA 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 P1FAA 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.

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Need Help with the 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 P1FAA GMC Code

What does the OBDII code P1FAA mean for my GMC vehicle?

The OBDII code P1FAA indicates that the Hybrid/EV Battery Interface Control Module 9 is not programmed correctly, which can affect the vehicle's hybrid or electric power management systems.

What symptoms might I experience with the P1FAA code?

Common symptoms include reduced power from the hybrid system, warning lights on the dashboard, and potential issues with battery charging and energy management.

What could cause the P1FAA code to appear?

The code may appear due to improper programming of the Battery Interface Control Module, software updates that were not applied, or issues with the module itself.

Can I drive my GMC vehicle with the P1FAA code?

While you may be able to drive the vehicle, it is not advisable as it can lead to decreased performance and efficiency of the hybrid or electric system.

How can I fix the P1FAA code?

To fix the P1FAA code, you may need to have the Battery Interface Control Module reprogrammed or updated at a dealership or qualified repair shop.

Is there a risk of battery damage if I ignore the P1FAA code?

Yes, ignoring the P1FAA code can lead to improper battery management, which may result in decreased battery life or other damage over time.

Do I need specialized tools to diagnose the P1FAA code?

Yes, diagnosing and reprogramming the Battery Interface Control Module typically requires specialized diagnostic tools and software that are often available at dealerships.

Can a faulty battery cause the P1FAA code to trigger?

While a faulty battery can lead to various issues, the P1FAA code specifically relates to the programming of the control module rather than the condition of the battery itself.

Will clearing the P1FAA code resolve the issue?

Clearing the code may temporarily turn off the check engine light, but the underlying issue with the control module programming will likely cause the code to reappear if not addressed.

What should I do if I see the P1FAA code during a routine inspection?

If you encounter the P1FAA code during an inspection, it is recommended to take your vehicle to a qualified technician or dealer for proper diagnosis and reprogramming of the Battery Interface Control Module.