AutoCodes – GMC – P1A4F GMC

P1A4F GMC Code - Drive Motor 1 Control Module Not Programmed

Quick Answer

The drive motor control modules are internal to the Power Inverter Module, often referred to as the drive motor-generator Power Inverter Module, and are not serviced separately. Common causes include Faulty Power Inverter Module (PIM), Power Inverter Module (PIM) harness is open or shorted, Power Inverter Module (PIM) 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: P1A4F GMC indicates Drive Motor 1 Control Module Not Programmed.
Common causes: Common causes include Faulty Power Inverter Module (PIM), Power Inverter Module (PIM) harness is open or shorted, Power Inverter Module (PIM) 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 809

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 Aug 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1A4F GMC Description

The drive motor control modules are internal to the Power Inverter Module, often referred to as the drive motor-generator Power Inverter Module, and are not serviced separately. This fault is handled inside the drive motor control modules and no external circuits are involved. The Diagnostic Trouble Code (DTC) will set when the Power Inverter Module has detected an internal malfunction, or a service module has been installed but not yet programmed.

OBDII Code P1A4F GMC - Drive Motor 1 Control Module Not Programmed - AutoCodes.com — P1A4F GMC Code - Drive Motor 1 Control Module Not Programmed

What does this mean?

What are the Possible Causes of the DTC P1A4F GMC?

Faulty Power Inverter Module (PIM)
Power Inverter Module (PIM) harness is open or shorted
Power Inverter Module (PIM) circuit poor electrical connection

How to Fix the DTC P1A4F 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 P1A4F 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 P1A4F GMC code?

Need more information on how to fix the P1A4F GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1A4F GMC code diagnosed by a professional: Find a repair shop in your area

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 P1A4F GMC Code

1. What are the common symptoms of OBDII code P1A4F GMC (Drive Motor 1 Control Module Not Programmed)?

- Common symptoms include a check engine light, reduced engine power, and potential drivability issues.

2. What can cause the OBDII code P1A4F GMC to appear?

- This code typically appears when the Drive Motor 1 Control Module is not programmed correctly or there is a communication issue within the control module system.

3. How can I diagnose the OBDII code P1A4F GMC?

- Diagnosis usually involves using a scan tool to retrieve the code, checking for any other related codes, and inspecting the Drive Motor 1 Control Module for proper programming.

4. Can I drive my vehicle with the OBDII code P1A4F GMC active?

- It is not recommended to drive your vehicle with this code active, as it can lead to further damage and potentially unsafe driving conditions.

5. What are the repair options for OBDII code P1A4F GMC?

- Repair options include reprogramming the Drive Motor 1 Control Module, addressing any communication issues, and ensuring all connections are secure.

6. How much does it cost to fix the OBDII code P1A4F GMC?

- The cost of fixing this code can vary depending on the underlying issue, but it may involve programming fees, labor costs, and potential part replacements.

7. Can I reset the OBDII code P1A4F GMC on my own?

- While you can attempt to clear the code with a scan tool, it is important to address the root cause of the issue to prevent the code from reoccurring.

8. Is the OBDII code P1A4F GMC a common problem in GMC vehicles?

- This code is not extremely common, but it can occur in GMC vehicles with drive motor control module programming issues.

9. Are there any DIY tips for troubleshooting the OBDII code P1A4F GMC?

- DIY tips may include checking for loose connections, ensuring the control module is properly seated, and verifying programming settings if possible.

10. Can a mechanic help me fix the OBDII code P1A4F GMC?

- Yes, a qualified mechanic with experience in diagnosing and repairing electrical system issues can help you fix the OBDII code P1A4F GMC.