No need to buy new tire pressure sensor
Do not reuse any nuts that have been tightened (even one time) to the specified torque, as they are deformed inside.
Do not use air or electric impact tools to tighten a valve stem nut. Tightening the nut beyond the specified torque can damage the nut.
You may hear a snap or pop as you tighten the nut (this is normal). Make sure that there is no space between the sensor and the wheel.