These are some codes that I made for Super Mario Maker 2 relating to P Switches. These codes will work on all versions of the game, but these have only been tested on the latest update (1.3).

Tested on Build ID: e7101fe3bb2c4bac

[Press X+Y To Activate P Switch]
8000000C
04100000 99DAFB00 0000021C
02100000 99DAFB08 00000001
20000000
Controls:
X + Y = Activate P Switch

[Add/Remove P Switch Time]
80002080
54110000 99DAFB00
94011100 0000005A
A4100410 99DAFB00
02100000 99DAFB08 00000001
20000000
80008080
54110000 99DAFB00
94111100 0000005A
A4100410 99DAFB00
20000000
Controls:
R + Up = Add P Switch Time
R + Down = Remove P Switch Time

[Always Active P Switch]
04100000 99DAFB00 0000FFFF
02100000 99DAFB08 00000001

[Never Active P Switch]
02100000 99DAFB08 00000000

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