The following are known Action Replay Codes for Tony Hawk’s Downhill Jam on Nintendo DS (NDS).

Game ID: AWKE-01B0D63E

Press SELECT for Max Cash
92101290 00000004
021c6be0 3b9ac9ff
d2000000 00000000

All Art, Characters & Cheats
021c6bc8 7fffffff

PLAYER STAT CODES:
Lower Stats with the L+R+Left codes, spend remaining points, then use the L+R+Right codes to continue.

L+R+Right: Air Stats = Max
92101290 00000310
221d1c34 0000000f
d2000000 00000000

L+R+Right: Speed = Max
92101290 00000310
221d1c38 0000000f
d2000000 00000000

L+R+Right: Trick = Max
92101290 00000310
221d1c3c 0000000f
d2000000 00000000

L+R+Right: Balance = Max
92101290 00000310
221d1c40 0000000f
d2000000 00000000

L+R+Left: Air Stats = 0
92101290 00000320
221d1c34 00000000
d2000000 00000000

L+R+Left: Speed = 0
92101290 00000320
221d1c38 00000000
d2000000 00000000

L+R+left: Trick = 0
92101290 00000320
221d1c3c 00000000
d2000000 00000000

L+R+Left: Balance = 0
92101290 00000320
221d1c40 00000000
d2000000 00000000