Error Code P0A49: What It Means & What To Do?

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Improper operation of the high voltage system is generally known as drive motor ‘B’ position sensor circuit intermittent. Sensors are used by the hybrid control module to find the location of hybrid motor’s internal components. P0A49 error code will be set by the ECM module, if the hybrid control module finds any error in the position sensor.

To find the position of the magnetic poles of a motor generator’s rotor, a resolver which functions as sensor is used. It is highly crucial to find the exact position of poles with perfect control of MG1& MG2. There is a stater for each resolver that has 2 detection coils S and C and an excitation coil. Due to the oval shape of rotor, as the rotor keeps turning the shape and size of stater and as well as rotor will change. With respect to the position of sensor rotor, a varying current with fixed frequency will pass through the excitation coil and detection coils S and C. the height of waveform and position of rotor is found by the MG ECU based on the detection coils S and C. Also, the CPU will analyze the change in position with determined length so that resolver can be used as sensor. The output signal from motor resolver is noted by the MG ECU and it finds the malfunctions.

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

• The inverter as well as the converter assembly might be faulty.
• Improper functioning of the hybrid vehicle generator assembly.
• Defective hybrid vehicle motor assembly.
• Damaged connectors or engine wiring harness.

1. Position Sensor - Faulty Position Sensors Will Result In Malfunctioning Of The Vehicle. Replace It Instantly.
2. Drive Coil - Damaged Or Defective Drive Coils Have To Be Replaced To Avoid P0A49 Error Code.
3. Metallic Rotor - The Vehicle Might Malfunction, If The Metallic Rotor Is Damaged. Replace Them As Soon As Possible.
4. Motor Generator - Are You Looking For A Right Replacement For The Damaged Motor Generator? Get It From Parts Avatar At Best Prices.
5. Converter Assembly - P0A49 Error Can Be Easily Avoided If The Defective Converter Assembly Is Repaired.
6. Generator Assembly - Repairing Or Changing The Damaged Generator Assembly Is Essential To Avoid P0A49 Error In The Vehicle.
7. Motor Assembly - Get The Right Replacement For The Damaged Motor Assembly At Best Prices Online From Parts Avatar.
8. Engine Wiring Connector - Replacing The Broken Connectors Can Help You To Get Rid Of The P0A49 Error Code.

We at Parts Avatar Canada care for our customers, and that’s why we will help you to diagnose P0A49 code by listing out some major symptoms. They are mentioned below as follows:

Common Symptoms

• The service engine’s warning light and engine light will keep blinking and stays on.

Learn the ways with which you can correct this P0A49 trouble code:

• Altering the damaged converter assembly and generator assembly.
• The damaged connectors have to be changed.
• Changing the damaged motor generator and motor assembly.

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.

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

• P0A49 is a generic type of trouble code which is easy to diagnose.
• The mechanic will usually begin with a visual inspection of the position sensor and drive coil for any possible damages or faults. Any possible damage will be immediately addressed.
• After this, some of the components like metallic rotor, motor generator, converter assembly, generator assembly, motor assembly will be carefully checked for defects or contamination. If they are damaged, the mechanic will repair them.
• After this the mechanic will see if the error code still appears.
• If the error still arises, the mechanic will check the connectors. At times a damaged connector can give rise to this error.
• If he comes across additional trouble codes like high voltage system, warning light of the service engine, it will be addressed first by the mechanic prior to the P0A49 error code.

Common Mistakes When Diagnosing the P0A49 Code

One common mistake which the mechanic may across with respect to P0A49 error is with the engine wires which may be damaged. Additionally the mechanic may find the high voltage control module and the high voltage motor to be malfunctioning.