P0A4A OBD Error Code: Problem & Solutions

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Error code P0A4A? Don’t know what to do? Well, Parts Avatar has it all! Here’s all that you need to know about the error code P0A4A. Generally, the OBD-II code high voltage system may not operate is often referred to as a drive motor "B" position sensor circuit overspeed. The position of the hybrid motor internal parts can be located with the help sensors employed by the hybrid control module. The engine control module stores the code P0A4A when the hybrid control module signals at a malfunction in the position sensor.

It can be observed that the position of the magnetic poles and the rotor of a motor generator is identified by a sensor known as a resolver. The accurate control of MG2 and MG1 is assured by the position of the poles. That is what makes knowing the position of the poles necessary. 2 detection coils (S, C) and an excitation coil can be found in a stator found in the resolver. The rotor, because of its oval shape, when turns causes the gap between the stator and rotor change too. According to the sensor rotor position, an alternating current with a pre-decided frequency is noted flowing through the excitation coil and detection coils S and C output alternating currents. In accordance with the phases of detection coils S and C and the heights of their waveform, the inverter detects the absolute position of the rotor with the help of converter assembly (MG ECU). also, the CPU performs the role of regulating the amount of change in the position within the pre-decided duration of time so as to be able to use the resolver as a speed sensor. The outputs from the motor resolver and the faults are monitored by the MG ECU.

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

• A defective inverter with converter assembly
• A distorted hybrid vehicle generator assembly
• A malfunctioning hybrid vehicle motor assembly
• A faulty wire harness or connector

1. Position Sensor - Don’t know what to do? Stressed about the P0A4A error code flashing? Well, it could be due to a malfunctioning position sensor. Get yours changed now in order to fight the error code P0A4A.
2. Drive Coil - Hate the halts like we do? Well, it could be due to a disconnected or corroded drive coil. Repair or replace it as soon as possible in order to avoid further complications caused by the error code P0A4A.
3. Metallic Rotor - Facing the error code P0A4A? An inferior quality metallic rotor can always be hazardous for the system also it is one of the primal causes behind the occurring of the error code P0A4A. Tune into Parts Avatar for supreme quality metallic rotor at economical prices.
4. Motor Generator - Having problems with the motor generator? Don’t you worry, Parts Avatar has it all. A faulty motor generator could end up being the root cause behind the error code P0A4A.
5. Converter Assembly - Get your error code fixed instantly with a new converter assembly. Parts Avatar right place that provides premium quality across the country.
6. Generator Assembly - Facing the error code P0A4A? Well, get that fixed with a new generator assembly at Parts Avatar available online at the best prices.
7. Motor Assembly - A distorted motor assembly can end up being the chief host inviting the error code P0A4A. So, replacing one can be one of the wisest decisions to avoid a problematic system.
8. Connector - Weary and damage connectors can often be problematic. So, to add some spark to your ride you definitely need the perfect quality connectors offered at Parts Avatar. Isn’t that just the perfect deal? 

Here listed are a few generic symptoms that can be observed as soon as the code P0A4A is stored:

Common Symptoms

• A high voltage system may fail to function

Stressed? Don’t know how to fix the error code P0A4A? Well, we have listed here some steps that should be taken in order to diagnose the error code.

• A faulty inverter with converter assembly should be mended or restored as per the requirements
• A malfunctioning hybrid vehicle generator assembly can be hazardous. So, it essential to change or repair the error code P0A4A
• A visual inspection of all the electrical components installed is imperative. Also, one should make sure of replacing or repairing a hybrid vehicle motor assembly
• Corroded or loose wire harness or connector should be attended immediately

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Here are some steps which you should follow in order to diagnose this fault code:

A standard OBD-II trouble code scanner should be used to diagnose this trouble code P0A4A. The scanner will be used to check and view the freeze frame data and assess the code by a certified technician. The technician should also check for additional trouble codes stored. After the repairs have been performed, the codes should be retested and the vehicle should be restarted to see if the code pertains. If the code disappears it could likely be due to a faulty diagnose or may represent an intermittent issue.

Common Mistakes When Diagnosing the P0A4A Code

Here are a few common mistakes that should be avoided while diagnosing the error code P0856:

• An extremely low high voltage coolant level
• A failure in the high voltage water pump
• A malfunction in the inverter/converter assembly