AutoCodes – GMC – P0AF0 GMC

P0AF0 GMC Code - Drive Motor Inverter Temperature Sensor Circuit High Voltage

Quick Answer

The generator control module also called the starter generator control module is comprised of the following three control modules; the hybrid powertrain control module, 14 volt power module and the drive motor control module. Common causes include Faulty Starter Generator Control Module, Starter Generator Control Module harness is open or shorted, Starter Generator 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: P0AF0 GMC indicates Drive Motor Inverter Temperature Sensor Circuit High Voltage.
Common causes: Common causes include Faulty Starter Generator Control Module, Starter Generator Control Module harness is open or shorted, Starter Generator 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 719

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 Nov 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0AF0 GMC Description

The generator control module also called the starter generator control module is comprised of the following three control modules; the hybrid powertrain control module, 14 volt power module and the drive motor control module. These three control modules are non serviceable and are part of the generator control module.
This is an internal fault detection of the generator control module. This fault is handled inside the generator control module and no external circuits are involved.

OBDII Code P0AF0 GMC - Drive Motor Inverter Temperature Sensor Circuit High Voltage - AutoCodes.com — P0AF0 GMC Code - Drive Motor Inverter Temperature Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0AF0 GMC?

Faulty Starter Generator Control Module
Starter Generator Control Module harness is open or shorted
Starter Generator Control Module circuit poor electrical connection

How to Fix the DTC P0AF0 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 P0AF0 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 P0AF0 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 P0AF0 GMC Code

1. What are common symptoms of OBDII code P0AF0 GMC?

Common symptoms include reduced hybrid system performance, illuminated warning lights (such as the check engine light), and potential drivability issues.

2. What does the OBDII code P0AF0 GMC indicate?

The code P0AF0 indicates a high voltage condition in the drive motor inverter temperature sensor circuit in a GMC vehicle.

3. What are possible causes of OBDII code P0AF0 GMC?

Possible causes include a faulty drive motor inverter temperature sensor, wiring or connector issues, software glitches, or problems within the hybrid system.

4. How can I diagnose the cause of OBDII code P0AF0 GMC?

Diagnosis typically involves using a scan tool to retrieve the code, inspecting the drive motor inverter temperature sensor and related components, and testing the circuit for proper voltage and continuity.

5. Can I drive my GMC with OBDII code P0AF0?

It is not recommended to continue driving your GMC with the code P0AF0 present, as it can lead to further damage to the hybrid system and potentially unsafe driving conditions.

6. How can I repair OBDII code P0AF0 GMC?

Repair methods may include replacing the drive motor inverter temperature sensor, repairing or replacing damaged wiring or connectors, updating software, or seeking assistance from a professional technician.

7. Will resetting the OBDII code P0AF0 GMC turn off the check engine light?

Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to reappear and the light will illuminate again.

8. Are there any recalls related to OBDII code P0AF0 GMC?

It's recommended to check with your local GMC dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls related to this specific OBDII code.

9. How serious is OBDII code P0AF0 GMC?

While the code itself may not cause immediate harm, ignoring it can lead to potential damage to the hybrid system and affect the vehicle's performance and safety.

10. Can I fix OBDII code P0AF0 GMC myself?

Depending on your level of automotive knowledge and access to tools, you may be able to address some causes of the code yourself. However, for more complex issues or if you are unsure, it's best to seek help from a qualified mechanic or dealership.