How to Diagnose and Fix P0877 Engine Code - OBD II Trouble Code Explain

OBD-II Code P0877 means the Transmission Fluid Pressure Sensor/Switch "D" Circuit Low. It indicates that the Transmission control module (TCM) has detected an incorrect signal from the Transmission Pressure Sensor.
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I'm having challenges with my 2014 RX350 gearbox, it selects properly however when the vehicle gets hot, it would start malfunctioning, what must I do ? It was diagnosed with OBD2 with fault code P0877