Guide To P0A43 OBD Error Code Solutions

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Does your vehicle’s engine light keeps flashing? Are there any issues in the inverter or converter assembly? Then there is a high probability that the P0A43 error code is stored in your vehicle. Drive motor ‘A’ position sensor circuit intermittent generally refers to the high voltage system that does not function properly. With the help of sensor, the position of the internal components of the hybrid motor is found by the hybrid control module. The P0A43 error will be set in the vehicle by the ECM module if the position sensor is faulty.

A resolver is nothing but a sensor which finds the position of the magnetic poles of the rotor of a motor generator. It is impossible to find the exact position of the poles with respect to MG1 and MG2. There is an excitation coil and 2 detection coils(S, C) in the stator of every resolver. As the rotor keeps turning, the gap between stator and rotor will change due to the oval shape of the rotor. An irregular current combined with fixed frequency will flow through detection coils (S, C), excitation coils- the output irregular current with respect to sensor rotor position. Based on the phases of detection coils S and C, the exact position of the rotor and height of the waveform is found by the inverter along with the converter assembly. The variation in the change in position with fixed length of time is calculated by the CPU so that the resolver can be used as speed sensor. The signal output is looked after by the MG ECU from the motor resolver and identifies the faults.

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

• Damaged inverter along with converter assembly.
• Defective hybrid vehicle generator assembly.
• Broken hybrid vehicle motor assembly.
• Either the engine wiring harness or the connectors might cause trouble.

1. Position Sensor - The P0A43 Error Code Can Be Avoided When The Faulty Position Sensor Is Replaced.
2. Drive Coil - Replacing The Defective Drive Coils Will Make Your Vehicle Function Normally.
3. Metallic Rotor - Do You Want To Get Rid Of The P0A43 Error Code In Your Vehicle? Then Replace The Damaged Metallic Rotor.
4. Motor Generator - Changing The Defective Motor Generator Can Help You To Get Rid Of The P0A43 Error In Your Vehicle.
5. Converter Assembly - Visually Inspect For Any Possible Damages In The Converter Assembly And Replace It As Soon As Possible If There Are Any Defects.
6. Generator Assembly - Check The Generator Assembly If It Is Damaged. If You Find It To Be Faulty Replace It Immediately.
7. Motor Assembly - Fixing The Damaged Motor Assembly Will Make Your Vehicle To Run Smoothly.
8. Engine Wiring Connector - Changing The Damaged Connectors Is Very Important So As To Avoid The P0A43 Error In The Vehicle.

We at Parts Avatar Canada care for our customers, and that’s why we will help you to diagnose P0A43 code by listing out some major symptoms. They are mentioned below as follows:

Common Symptoms

• You might find the engine light or else the warning light of the service engine turned on.

Learn the ways with which you can correct this P0A43 trouble code:

• Replacing the faulty converter assembly and generator assembly.
• Changing the connectors that are damaged.
• The motor generator and motor assembly needs replacement. 

Don’t get tensed if you are still facing any of these issues as we care for our customers and that’s why we offer a good range of powertrain control module (PCM), fuel injector, body control module, fuel injection pump, electronic control module, and a lot more. We are sure that now all your issues would be resolved.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0A43 code to be stored:

• This is a general type of error code, where the mechanic will use a scanner to check for the stored error codes.
• To the diagnostic port, the mechanic will attach the scanner so that every of the stored codes and freeze frame data are retrieved.
• As a first step, the mechanic will start inspecting the drive coils and position sensor as they can give rise to performance issues.
• After this, the mechanic will start inspecting the components like motor generator, converter assembly, and motor assembly and so on for some possible damages or defects. If they are defective the mechanic will replace them as needed.
• As a very rare case, the mechanic may come across the faulty connectors which has to be replaced.
• After every diagnostic process is carefully done, make sure that you reset the code and test drive the vehicle. This has to be done to see if the error codes still appear.
• This step will eventually help the mechanic or the technician to know if the code is still stored and help him to locate the area as to where the fault occurred.

Common Mistakes When Diagnosing the P0A43 Code

The common mistakes that appear when diagnosing the P0A43 error is that the high voltage control module and the high voltage motor might be defective. The mechanic may also come across the wires which are problematic.