AutoCodes – GMC – P0A46 GMC

P0A46 GMC Code - Drive Motor 2 Position Sensor Performance

Quick Answer

The drive motor generator position sensor is monitored by the motor control module. Common causes include Faulty Drive Motor Generator, Drive Motor Generator harness is open or shorted, Drive Motor 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: P0A46 GMC indicates Drive Motor 2 Position Sensor Performance.
Common causes: Common causes include Faulty Drive Motor Generator, Drive Motor Generator harness is open or shorted, Drive Motor 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 1,230

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 Mar 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0A46 GMC Description

The drive motor generator position sensor is monitored by the motor control module. The motor control module monitors the angular position, speed and direction of the drive motor generator rotor based upon the signals of the resolver-type 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 drive motor generator. At vehicle ON, the motor control module outputs a 7 volt ac, 10 kHz excitation signal to the drive coil. The drive coil excitation signal creates a magnetic field surrounding the two driven coils and the irregular shaped rotor. The motor 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 motor control module to determine the exact position, speed and direction of the drive motor generator rotor. The position sensor is a non-serviceable part of the drive motor generator.

OBDII Code P0A46 GMC - Drive Motor 2 Position Sensor Performance - AutoCodes.com — P0A46 GMC Code - Drive Motor 2 Position Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P0A46 GMC?

Faulty Drive Motor Generator
Drive Motor Generator harness is open or shorted
Drive Motor Generator circuit poor electrical connection

How to Fix the DTC P0A46 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 P0A46 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.

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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 P0A46 GMC Code

1. What are the common symptoms of OBDII code P0A46 in a GMC related to Drive Motor 2 Position Sensor Performance?

- Common symptoms include decreased fuel efficiency, reduced power output, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P0A46 GMC related to Drive Motor 2 Position Sensor Performance?

- Causes may include a faulty drive motor 2 position sensor, wiring issues, or problems with the hybrid powertrain system.

3. How can I diagnose OBDII code P0A46 in my GMC for Drive Motor 2 Position Sensor Performance?

- Diagnosis involves using a scan tool to retrieve the trouble code, checking the drive motor 2 position sensor for proper operation, and inspecting related wiring for damage.

4. Can I continue driving my GMC with OBDII code P0A46 related to Drive Motor 2 Position Sensor Performance?

- It is not recommended to continue driving with this code present, as it can lead to decreased performance and potential damage to the hybrid system.

5. How can I repair OBDII code P0A46 GMC related to Drive Motor 2 Position Sensor Performance?

- Repair typically involves replacing the faulty drive motor 2 position sensor, addressing any wiring issues, and clearing the trouble code from the vehicle's computer.

6. Is it possible to reset OBDII code P0A46 in a GMC related to Drive Motor 2 Position Sensor Performance without repairing the issue?

- While you can clear the trouble code temporarily, it is important to address the underlying problem to prevent further issues and ensure proper vehicle operation.

7. Are there any DIY tips for fixing OBDII code P0A46 GMC related to Drive Motor 2 Position Sensor Performance?

- DIY tips may include checking and cleaning sensor connections, inspecting wiring for damage, and ensuring proper installation of a new drive motor 2 position sensor.

8. Can a mechanic help me with OBDII code P0A46 GMC related to Drive Motor 2 Position Sensor Performance?

- Yes, a qualified mechanic can diagnose the issue, perform the necessary repairs, and clear the trouble code to restore your vehicle's performance.

9. Will OBDII code P0A46 GMC related to Drive Motor 2 Position Sensor Performance affect my vehicle's drivability?

- Yes, this code can impact your vehicle's drivability by causing reduced power output and potentially affecting fuel efficiency.

10. How can I prevent OBDII code P0A46 related to Drive Motor 2 Position Sensor Performance in my GMC?

- Regular maintenance, such as checking the hybrid system components and addressing any warning lights promptly, can help prevent issues leading to this trouble code.