Error Code P0A45: What It Means & What To Do?

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What does drive motor ‘B’ position sensor circuit mean? Why does P0A45 error occur? Drive motor ‘B’ position sensor circuit refers to the high voltage system that malfunctions. By using the sensors, the hybrid control module finds the location of the hybrid motor’s internal components. If there is any fault in the position sensor which is found by the hybrid control module, then the P0A45 error code will be set by the ECM module.

The motor control module monitors the drive motor generator position sensor. Depending on the signals of the resolver-type position sensor, the angular position, speed and direction of the drive motor generator rotor is carefully monitored by the motor. There is a drive coil, 2 driven coils and a metallic rotor of irregular shape which the position sensor has. The metallic rotor is fixed to the drive motor generator’s shaft. An output of 7 volt ac, 10 kHz excitation signal comes out of the drive coil from the motor control module when the vehicle is ON. A magnetic field is created by the drive coil which surrounds the 2 driven coil and irregular shaped rotor. The 2 driven coil circuit is then monitored by the motor control module for a return signal. The return signals of the driven coil that is magnetically induced will differ in size and shape due to the position of the irregular metallic rotor. The correct location, speed and direction of the drive motor generator rotor is found when the 2 driven coils are compared by the motor control module. It is not possible to service the position sensor of drive motor generator.

What causes this problem with the Drive Motor "B" Position Sensor Circuit?

• Problematic inverter along with converter assembly.
• Hybrid vehicle generator assembly might have issues.
• The hybrid vehicle motor assembly might be faulty.
• Faulty connectors or engine wiring harness.

1. Position Sensor - Are You Looking For A Replacement For Your Defective Position Sensor? Get It From Parts Avatar.
2. Drive Coil - The Damaged Drive Coils Needs Immediate Fixation To Avoid The P0A45 Error Code.
3. Metallic Rotor - You Can Find The Replacement For Your Damaged Metallic Rotor From Parts Avatar At Best Prices Online.
4. Motor Generator - Get The Right Replacement For Your Defective Motor Generator At Best Prices From Parts Avatar.
5. Converter Assembly - Repairing The Faulty Converter Assembly Is One Of The Best Way To Get Rid Of The P0A45 Error Code.
6. Generator Assembly - Need A Replacement For Your Damaged Generator Assembly? Get It At Best Price From Parts Avatar.
7. Motor Assembly - The P0A45 Error In The Vehicle Can Be Avoided If The Defective Motor Assembly Is Changed.
8. Engine Wiring Connector - The Faulty Connectors Need Immediate Replacement So That The P0A45 Error Is Avoided.

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0A45 here:

Common Symptoms

• Blinking of the engine light as well as the warning light of the service engine.

Here are some ways with the help of which you will be able to correct the OBD Code P0A45:

• Fixing the damaged converter assembly and generator assembly.
• Problematic connectors must be fixed.
• The faulty motor generator and motor assembly must be changed.

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If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:

• The P0A45 diagnostic trouble code is not very difficult to diagnose or carry out.
• If this error code appears in your vehicle it is always best to have a qualified technician or mechanic to look at this error code, where he will use a scanner to find out the problem.
• With the help of a scanner, the mechanic will recover every of the stored codes and freeze frame data by connecting it to the diagnostic port of the vehicle.
• Initially the mechanic will begin by checking the drive coils and positions sensor as it can cause performance issues. Also, they can be one of the reason if the error code is stored in the vehicle.
• After this, the mechanic will look after the components like motor generator, generator assembly, converter assembly, motor assembly, for any damages and defects. Necessary repairs will be carried out if they are defective.
• Finally the connectors will be inspected for any damages. Once every diagnosis and repairs are properly done, it is very important to retest the code and test drive the vehicle to see if the error codes, still appear and if the engine light keeps blinking.
  

Common Mistakes When Diagnosing the P0A45 Code

• Defective high voltage control module.
• Issues with the high voltage motor.
• The engine wires might be problematic.