AutoCodes – Cadillac – P1FAA Cadillac

P1FAA Cadillac 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 Cadillac 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 834

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

What does this mean?

What are the Possible Causes of the DTC P1FAA Cadillac?

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 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 P1FAA 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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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 Cadillac Code

1. What does the OBDII code P1FAA mean for a Cadillac?

P1FAA indicates that the Hybrid/EV Battery Interface Control Module 9 is not programmed correctly or is missing calibration data.

2. What are the common symptoms of the P1FAA code in a Cadillac?

Symptoms may include the hybrid system not functioning properly, reduced vehicle performance, warning lights on the dashboard, or the inability to start the vehicle.

3. What causes the P1FAA code to appear in a Cadillac?

The most common cause is that the Hybrid/EV Battery Interface Control Module 9 has not been programmed after being replaced, or the programming has been corrupted.

4. How can I fix the P1FAA code on my Cadillac?

The issue can typically be resolved by reprogramming or updating the Hybrid/EV Battery Interface Control Module 9 using a GM-approved diagnostic tool.

5. Can I drive my Cadillac with the P1FAA code active?

Driving with this code is not recommended, as it may lead to hybrid system malfunctions or reduced vehicle performance.

6. How much does it cost to fix the P1FAA code?

The cost can vary, but typically includes diagnostic fees and module reprogramming, which can range from $150 to $300 at a dealership or certified shop.

7. Can I clear the P1FAA code without reprogramming the module?

No, clearing the code without addressing the underlying programming issue will likely result in the code returning.

8. Do I need special tools to fix the P1FAA code on a Cadillac?

Yes, resolving this code requires a GM-approved scan tool or equivalent that supports module programming.

9. Is the P1FAA code specific to Cadillacs?

While the code is most commonly associated with Cadillac hybrid or EV models, it can appear on other GM vehicles with similar systems.

10. What happens if the P1FAA code is ignored?

Ignoring this code can lead to further hybrid or EV system malfunctions, reduced performance, and potential damage to the battery or other components.