AutoCodes – GMC – P0A3F 2016 GMC Sierra

P0A3F 2016 GMC Sierra Code - Drive Motor Position Sensor Circuit

Quick Answer

The generator control module, also called the starter/generator control module, is comprised of the following three control modules: the hybrid/EV powertrain control module 1, 14 V power module, and the drive motor control module. Common causes include Faulty Starter/Generator, Starter/Generator harness is open or shorted, Starter/Generator 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: P0A3F 2016 GMC Sierra indicates Drive Motor Position Sensor Circuit.
Common causes: Common causes include Faulty Starter/Generator, Starter/Generator harness is open or shorted, Starter/Generator 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 212

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 07, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0A3F 2016 GMC Sierra Description

The generator control module, also called the starter/generator control module, is comprised of the following three control modules: the hybrid/EV powertrain control module 1, 14 V power module, and the drive motor control module. These three control modules are nonserviceable and are part of the generator control module.
The generator control module monitors the angular position, speed, and direction of the starter generator rotor based upon the signals of the resolver-type motor position sensor. The position sensor contains a drive coil, two driven coils, and an irregular-shaped metallic rotor. The metallic rotor is mechanically attached to the shaft of the starter generator.
At ignition ON, an AC voltage, 10 kHz excitation signal is output to the drive coil. The drive coil excitation signal creates a magnetic field surrounding the two driven coils and the irregular-shaped rotor. The generator control module then monitors the two driven coil circuits for a return signal. The position of the irregular metallic rotor causes the magnetically induced return signals of the driven coils to vary in size and shape. A comparison of the two driven coils signals allows the generator control module to determine the exact position, speed, and direction of the starter generator rotor. The position sensor is a non-serviceable part of the starter generator.

OBDII Code P0A3F 2016 GMC Sierra - Drive Motor Position Sensor Circuit - AutoCodes.com — P0A3F 2016 GMC Sierra Code - Drive Motor Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P0A3F 2016 GMC Sierra?

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

How to Fix the DTC P0A3F 2016 GMC Sierra?

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 P0A3F 2016 GMC Sierra 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 P0A3F 2016 GMC Sierra code?

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Need Help with the Code?

Get the P0A3F 2016 GMC Sierra 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 P0A3F 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P0A3F in a 2016 GMC Sierra?

The common symptoms of OBDII code P0A3F, Drive Motor Position Sensor Circuit in a 2016 GMC Sierra, may include reduced engine performance, poor fuel economy, and the illumination of the check engine light.

2. What can cause the OBDII code P0A3F to trigger in a 2016 GMC Sierra?

The OBDII code P0A3F, Drive Motor Position Sensor Circuit, in a 2016 GMC Sierra can be triggered by a faulty drive motor position sensor, damaged wiring or connectors related to the sensor, or issues with the drive motor itself.

3. How can I diagnose the cause of OBDII code P0A3F in my 2016 GMC Sierra?

To diagnose the cause of OBDII code P0A3F in a 2016 GMC Sierra, you can use an OBDII scanner to retrieve the code and then inspect the drive motor position sensor, wiring, and connectors for any visible damage or issues.

4. Can I continue driving my 2016 GMC Sierra with OBDII code P0A3F present?

It is not recommended to continue driving your 2016 GMC Sierra with OBDII code P0A3F present, as it can lead to further damage to the drive motor components and affect the vehicle's performance.

5. How can I repair OBDII code P0A3F in my 2016 GMC Sierra?

To repair OBDII code P0A3F in a 2016 GMC Sierra, you may need to replace the drive motor position sensor, repair or replace any damaged wiring or connectors, and then clear the code using an OBDII scanner.

6. Can a DIY enthusiast fix OBDII code P0A3F in a 2016 GMC Sierra?

While some DIY enthusiasts may have the skills to diagnose and repair OBDII code P0A3F in a 2016 GMC Sierra, it is recommended to seek professional help if you are not experienced in dealing with drive motor components and sensors.

7. Is OBDII code P0A3F a common issue in 2016 GMC Sierra vehicles?

OBDII code P0A3F, Drive Motor Position Sensor Circuit, may not be a common issue in 2016 GMC Sierra vehicles, but it can occur due to various factors like sensor malfunctions or wiring problems.

8. Can extreme weather conditions cause OBDII code P0A3F to trigger in a 2016 GMC Sierra?

Extreme weather conditions can potentially cause OBDII code P0A3F to trigger in a 2016 GMC Sierra if the drive motor position sensor or its components are exposed to moisture, heat, or other environmental factors that could lead to damage.

9. How much does it cost to repair OBDII code P0A3F in a 2016 GMC Sierra at a dealership?

The cost to repair OBDII code P0A3F in a 2016 GMC Sierra at a dealership may vary depending on the exact cause of the issue, but it could range from a couple of hundred to a few thousand dollars, including parts and labor.

10. Are there any recalls related to OBDII code P0A3F in 2016 GMC Sierra vehicles?

It is advisable to check with the manufacturer or authorized service centers for any recalls related to OBDII code P0A3F in 2016 GMC Sierra vehicles, as recalls are sometimes issued to address specific issues with certain components.