Error Code P0A41: What It Means & What To Do?

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When will the drive motor’s position sensor circuit be low? What does P0A41 error code signify? How does this error code gets stored in the vehicle? The drive motor ‘A’ position sensor circuit will be low when the high voltage system does not operate correctly. The position of the internal components of the hybrid motor is identified with the help of the sensors of the hybrid control module. If a fault is found in the position sensor of the hybrid control module, then the P0A41 error code will be set by the ECM module.

A sensor which is used to find the location of the magnetic poles to the rotor of a motor generator is the resolver. It is very difficult to find the exact locations of MG1 and MG2. There is an excitation coil and 2 detection coil in the stator of each resolver. As the rotor is oval in shape, while the rotor turns, the gap between the rotor and stator keeps changing. There is a flow of irregular current with fixed frequency through the excitation coil, detection coil, an output alternating current in agreement with the position of the sensor rotor.

The correct position of the rotor in combination with the inverter and converter assembly is found, conferring to the phases of detection coils S&C as well the waveform’s height. The change in location with fixed length of time is calculated by the CPU so that the resolver can be used as speed sensor. The signal output from the motor resolver is looked after by the MG ECU which identifies the malfunction in the system.

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

• The inverter along with the converter assembly might be damaged.
• Hybrid vehicle generator assembly might be defective.
• Hybrid vehicle motor assembly might not function properly.
• Connector or engine wiring harness issues.

1. Position Sensor - Replacing a defective sensor will help your vehicle to function normally.
2. Drive coil - Performance issue can rise if the drive coil is damaged or broken. Change the damaged drive coil immediately.
3. Metallic Rotor - You can find the replacement for your damaged metallic rotor from Parts Avatar at best prices online.
4. Motor generator - If you are looking to get rid of the P0A41 error, then you must change the broken motor generator as soon as possible.
5. Converter Assembly - Fixing your faulty converter assembly will help your engine to run smoothly.
6. Generator Assembly - Visually inspect your generator assembly for possible damages and faults. If it is damaged, it has to be replaced immediately.
7. Motor Assembly - Are you looking for a replacement for your defective motor assembly? Get it at affordable cost from Parts Avatar.
8. Engine Wiring Connector - Is the connector broken? Is it damaged? Get the replacement for damaged connector from Parts Avatar.

It is vital 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 P0A41 here:

Common Symptoms

• The service engine warning light or else the engine light will stay on.

Want to correct the Trouble Code P0A41? Read these points mentioned below:

• Defective converter assembly and generator assembly has to be changed.
• Broken connector needs to be fixed.
• Motor generator and motor assembly has to be repaired.
• Changing the drive coils. 

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It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0A41 code to be stored: 

• This is a general type of trouble code, where the mechanic will use a scanner to carefully look for any stored error code.
• He will then connect the scanner to the diagnostic port of the vehicle and recover all stored codes and freeze frame data as it can help him with further diagnosis.
• For this P0A41 error code, initially the mechanic will carefully inspect the position sensor and drive coils.
• Any possible damages to the sensor or drive coils has to be fixed immediately.
• As a next step, the mechanic will visually examine the components like generator assembly, converter assembly and motor assembly.
• If any of these components are damaged, they will be replaced immediately by the mechanic.
• Finally, the mechanic will check for any possible faults in the connector and replace them quickly if there are damaged.
• After every of the diagnostic procedure is carefully done, the mechanic will reset the error code and then test drive the vehicle again.
• This will help him to know if the error code in the vehicle still occurs and also, helps him to locate the area as to where the fault occurred.

Common Mistakes When Diagnosing the P0A41 Code

• The high voltage control module might be defective.
• The high voltage motor might be damaged.
• Issue with wiring.