AutoCodes – GMC – P1FA8 GMC

P1FA8 GMC Code - Hybrid/EV Battery Interface Control Module 7 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
P1FA8 GMC indicates Hybrid/EV Battery Interface Control Module 7 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 851
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 27, 2020
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Code P1FA8 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 P1FA8 GMC - Hybrid/EV Battery Interface Control Module 7 Not Programmed - AutoCodes.com
P1FA8 GMC Code - Hybrid/EV Battery Interface Control Module 7 Not Programmed

What are the Possible Causes of the DTC P1FA8 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 P1FA8 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 P1FA8 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 P1FA8 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 P1FA8 GMC Code

1. What does the OBDII code P1FA8 mean on a GMC vehicle?

The P1FA8 code indicates that the Hybrid/EV Battery Interface Control Module 7 is not programmed or has lost its programming.

2. What are the symptoms of a P1FA8 code in a GMC vehicle?

Symptoms may include the check engine light being illuminated, reduced hybrid/EV performance, or the vehicle failing to start.

3. What causes the P1FA8 code to appear?

The primary cause is typically that the Battery Interface Control Module 7 was not properly programmed during installation or that its programming was corrupted.

4. How can the P1FA8 code be diagnosed?

A technician will use a diagnostic scanner to confirm the code, inspect the control module's connections, and check for programming inconsistencies.

5. Is the P1FA8 code serious?

Yes, it can affect the performance of the hybrid/EV system and potentially prevent the vehicle from operating correctly. It should be addressed promptly.

6. Can I drive my GMC with a P1FA8 code?

Driving may be possible in some cases, but performance could be reduced, and further damage to the hybrid/EV system might occur if left unresolved.

7. How do you fix the P1FA8 code on a GMC vehicle?

The control module needs to be reprogrammed using the appropriate GM software and tools, typically by a certified technician or dealership.

8. Can I reprogram the Battery Interface Control Module 7 myself?

Reprogramming requires specialized GM software and tools, so it is best handled by a professional technician or dealership.

9. Will replacing the Battery Interface Control Module fix the P1FA8 code?

Replacing the module might fix the issue, but the new module must be correctly programmed to work with the vehicle.

10. How much does it cost to fix a P1FA8 code?

The cost depends on labor rates and whether the module needs replacement, but reprogramming typically costs between $150 and $300 at a dealership.

Discuss the causes and fixes for P1FA8 GMC OBDII Code

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