AutoCodes – GMC – P0A45 GMC

P0A45 GMC Code - Drive Motor 2 Position Sensor Circuit

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: P0A45 GMC indicates Drive Motor 2 Position Sensor Circuit.
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 1,457

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 P0A45 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 P0A45 GMC - Drive Motor 2 Position Sensor Circuit - AutoCodes.com — P0A45 GMC Code - Drive Motor 2 Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P0A45 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 P0A45 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 P0A45 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 P0A45 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 P0A45 GMC Code

1. What are the common symptoms of OBDII code P0A45 Drive Motor 2 Position Sensor Circuit in a GMC?

The common symptoms include reduced engine power, illuminated check engine light, and possible drivability issues.

2. What are the possible causes of OBDII code P0A45 in a GMC related to the Drive Motor 2 Position Sensor Circuit?

Possible causes include a faulty drive motor 2 position sensor, damaged wiring or connectors in the sensor circuit, or issues with the hybrid powertrain control module.

3. How can I diagnose the OBDII code P0A45 Drive Motor 2 Position Sensor Circuit issue in my GMC?

Diagnosis typically involves using a scan tool to read the error code, checking the drive motor 2 position sensor for proper functioning, inspecting related wiring and connectors, and testing the hybrid powertrain control module.

4. Can I continue to drive my GMC with OBDII code P0A45 Drive Motor 2 Position Sensor Circuit?

It is not recommended to drive your vehicle with this code as it can lead to further damage and potentially unsafe driving conditions. Seek professional assistance for proper diagnosis and repair.

5. What are some repair tips for resolving OBDII code P0A45 in a GMC?

Repair tips may include replacing the drive motor 2 position sensor, repairing or replacing damaged wiring or connectors, and reprogramming or replacing the hybrid powertrain control module if necessary.

6. How much does it typically cost to repair OBDII code P0A45 Drive Motor 2 Position Sensor Circuit in a GMC?

The cost of repair can vary depending on the exact cause of the issue, parts needed for replacement, and labor charges. It is advisable to obtain quotes from reputable mechanics or service centers.

7. Can a DIY enthusiast fix the OBDII code P0A45 Drive Motor 2 Position Sensor Circuit issue in a GMC?

While some experienced DIY enthusiasts may be able to diagnose and repair this issue, it is recommended to seek professional help due to the complexity of hybrid vehicle systems and the importance of proper diagnosis and repair.

8. Are there any recalls or technical service bulletins related to OBDII code P0A45 in GMC vehicles?

It is recommended to check with GMC dealerships or online databases for any relevant recalls or technical service bulletins related to this specific OBDII code in GMC vehicles.

9. How long does it typically take to repair OBDII code P0A45 Drive Motor 2 Position Sensor Circuit in a GMC?

The repair time can vary depending on the extent of the issue, availability of parts, and the expertise of the mechanic. It is advisable to inquire about the estimated repair time before proceeding with the repair.

10. Is it necessary to clear the OBDII code P0A45 Drive Motor 2 Position Sensor Circuit after repair in a GMC?

Yes, it is important to clear the error code using a scan tool after completing the repair to reset the vehicle's system and ensure that the issue has been successfully resolved.