Get your battery and charging system checked then report
Oh and the values you see for tps in percentage are just reference values calculated by the ecu in my understanding, never seen a car's throttle sensor show 100 percent on obd scanner
If you want to be sure check the resistance of the tps using a multimeter throughout the range; it should increase or decrease smoothly without missing any movement
Then you turn the ignition on, and check the voltage between ground and output signal of the tps, voltage range is usually 0v to 5v (wot) but you gotta find a manual first
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