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2011 Altima. My stepper motor goes up, hits 197 before 10 mph. I can't drive over 40 mph. After stepper motor is fully extended, the tcm never commands it to retract. I can reset the stepper motor and pressure readings are good until tcm commands the stepper motor out of wack.

P0746 and p0868. Took valvebody out cleaned it and solenoids while being actuated by 9v, have replaced flow control valve inside trans pump, along with both filters and all speed sensors, and stepper motor (granted with cheap Amazon),
Pictures aren't in order. Stepper target and actual goes up incrementally each time hitting the throttle, and stays commanded there even in park
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