No.  Code  Effect
   1  AJ2T-AA3C  Never lose a shield when shot
 Makes some enemies invincible; turn off to kill them
   2  AT2T-AA44  Protection from some falls--Some falls still kill you
   3  AM2A-WAH4  Start with 1 shield
   4  AS2A-WAH4  Start with 2 shields
   5  AX2A-WAH4  Start with 3 shields
   6  A52A-WAH4  Start with 5 shields
   7  BS2A-WAH4  Start with 10 shields
   8  C12A-WAH4  Start with 20 shields
   9  GS2A-WAH4  Start with 50 shields
 10  N12A-WAH4  Start with 100 shields
 11  GM6T-WAA4  Start with 50 credits
 12  NX6T-WAA4  Start with 100 credits
 13  HV9T-BELR + NV9T-AACT    Credit packs worth 100 credits
 14  HV9T-BELR + 7B9T-AGCT  Credit packs worth 1,000 credits
 15  HV9T-BELR + CB9T-ARLT  Credit packs worth 10,000 credits
 16  RGBT-A6T4  Always have enough money to buy
 17  RGBT-A6XN  Don't need to charge magnetic cartridge
 18  DJ2T-AA5C  Squat down and shoot gun to slide thru walls & trees. (And you won't fall.)
 Allows you to go places you normally can't go.
 Stand up to stop sliding. (Best if used with code 2)

Download The Big Book of Game Genie Codes.