P0A46 OBD Error Code: Problem & Solutions

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What does P0A46 error code tell you? What are its symptoms and diagnosis? Malfunctioning of the high voltage system is defined as drive motor ‘B’ position sensor circuit range/ performance. By using the sensors, the hybrid control module can locate the position of the internal component of hybrid motor. If any fault is identified by the hybrid control module in the position sensor, then the P0A46 error will be stored by the ECM module.

The motor control module looks after the angular position, speed, as well as the direction of drive motor generator rotor and drive motor generator position sensor depending on the signals of the resolver type position sensor. The position sensor has components like drive coil, 2 driven coils and metallic rotor that is of uneven shape. When the vehicle is on, an output of 7 volt ac, 10 kHz excitation signal is given to the drive coil from the motor control module. A magnetic field is created around the 2 driven coils and the rotor of uneven shape by the drive coil excitation signal. After this, the 2 driven coil is monitored for return signal by motor control module. The position of the metallic rotor which has improper shape will differ in size and shape due to the return signal of the drive coil which is magnetically induced. On comparing the 2 driven coils, the precise location, speed and route of drive motor generator is found by the motor control module. The position sensor which belongs to the drive motor generator cannot be serviced.

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

• The drive motor generator might be defective.
• The drive motor generator harness is either open or the circuit might be shorted.
• The electrical connection of the drive motor generator circuit might be poor.

1. Position Sensor - If You Are Looking To Get Rid Of The P0A46 Error, Then You Must Change The Damaged Position Sensor As Soon As Possible.
2. Drive Coil - Changing The Damaged Drive Coils Will Enable The Engine To Function Properly.
3. Metallic Rotor - Get The Right Replacement For A Faulty Metallic Rotor At Best Prices From Parts Avatar.
4. Motor Generator - Visually Inspect Your Motor Generator For Possible Damages And Faults. If It Is Damaged, Replace It Immediately.
5. Converter Assembly - P0A46 Error In The Vehicle Can Be Avoided By Changing The Damaged Converter Assembly.
6. Generator Assembly - Carefully Examine The Generate Assembly. If You Come Across Any Possible Faults, Replace It Quickly.
7. Motor Assembly - Replacement Of The Damaged Motor Assembly Is Essential To Avoid The P0A46 Error Code.
8. Engine Wiring Connector - If You Are Looking For A Replacement For Faulty Connectors, Get It From Parts Avatar At Affordable Prices Online.

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 P0A46 here:

Common Symptoms

• You will notice either of the lights, that is the engine light or the warning light of the service engine turned on.
• Improper functioning of the high voltage system.

Want to correct the Trouble Code P0A46? Read these points mentioned below:

• Issues in the converter assembly and generator assembly has to be repaired.
• Repairing the broken connectors.
• Fixing the faults in the motor generator and motor assembly.

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

• This is a general type of error code, where the diagnosis process and the repair work is not difficult to execute.
• Whenever this error arise, the mechanic will use a scanner to check the trouble codes in the vehicle. But a trained professional will use an advanced scanner like Autohex- to check for advanced diagnostic process.
• The mechanic will carefully look into the position sensor and drive coils if they are broken, damaged or corroded. If they are defective it will be replaced quickly.
• After this, the mechanic will look for possible damages in some of the electrical components like motor generator, generator assembly, and motor assembly and so on. Any damage to these components can also result in the storing of the error code.
• As a very rare case, you will find the connectors to be faulty which has to be replaced quickly.
• If there are any other error codes, they must be rectified first, before further proceeding with P0A46 error code.
• After the diagnosis, it is good to always reset the code and the vehicle must be test driven to know if the issue is resolved. Test driving the vehicle will help the mechanic to know as to where the error occurred.

Common Mistakes When Diagnosing the P0A46 Code

The common issue that arises when diagnosing the P0A46 error can be the wires that might be problematic. The mechanic may also find issues with the high voltage motor as well as the high voltage control module.