AutoCodes – Generic – P0A45

P0A45 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 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 8,113

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

What does this mean?

What are the Possible Causes of the DTC P0A45?

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?

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 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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Information for Specific Makes

P0A45 Buick — Drive Motor 2 Position Sensor Circuit
P0A45 Cadillac — Drive Motor 2 Position Sensor Circuit
P0A45 Chevrolet — Drive Motor 2 Position Sensor Circuit
P0A45 GMC — Drive Motor 2 Position Sensor Circuit
P0A45 Saturn — Drive Motor 2 Position Sensor Circuit

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 Code

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

- Common symptoms include poor acceleration, reduced power output, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P0A45 Drive Motor 2 Position Sensor Circuit?

- Possible causes include a faulty drive motor 2 position sensor, damaged wiring or connectors, or issues with the hybrid vehicle's control module.

3. How can I diagnose the issue related to OBDII code P0A45 Drive Motor 2 Position Sensor Circuit?

- Diagnosis typically involves using a scan tool to retrieve the fault code, testing the drive motor 2 position sensor for proper function, and inspecting the wiring for any damage.

4. Can driving with OBDII code P0A45 Drive Motor 2 Position Sensor Circuit cause further damage?

- Continuing to drive with this code may lead to decreased performance, potential damage to other components, and reduced fuel efficiency in hybrid vehicles.

5. What are some repair tips for resolving OBDII code P0A45 Drive Motor 2 Position Sensor Circuit?

- Repair tips include replacing the faulty drive motor 2 position sensor, repairing any damaged wiring or connectors, and clearing the fault code using a scan tool.

6. Is it safe to continue driving my vehicle with OBDII code P0A45 Drive Motor 2 Position Sensor Circuit?

- It is not recommended to continue driving the vehicle with this code active, as it may lead to further issues and potential safety concerns.

7. How much does it typically cost to repair OBDII code P0A45 Drive Motor 2 Position Sensor Circuit?

- Repair costs can vary depending on the extent of the issue, but replacing the drive motor 2 position sensor and addressing any wiring problems may range from $200 to $500.

8. Can I reset the OBDII code P0A45 Drive Motor 2 Position Sensor Circuit on my own?

- The code can be cleared using a scan tool, but it's important to diagnose and address the underlying issue causing the code to prevent it from reoccurring.

9. Are there any recalls related to OBDII code P0A45 Drive Motor 2 Position Sensor Circuit in certain vehicle models?

- It's recommended to check with the vehicle manufacturer or the National Highway Traffic Safety Administration (NHTSA) for any recalls related to this specific code.

10. How often should I have my drive motor and sensors inspected to prevent OBDII code P0A45 Drive Motor 2 Position Sensor Circuit?

- Regular maintenance schedules for hybrid vehicles typically include inspections of drive motors and sensors, so following the manufacturer's recommended service intervals is crucial in preventing such issues.