The following are known Game Genie Codes for Terminator 2: Judgment Day on Nintendo Game Boy.

• 70E-59D-6E9
  Start with 50% energy
• C95-00E-4C1
  You almost have infinite energy
• 001-03B-19E
  Infinite time in the Reprogramming Stage
• 058-54B-4CA
  5 shots will kill the end of Level 1 Boss
• 0A8-54B-4CA
  10 shots will kill the end of Level 1 Boss
• 148-54B-4CA
  20 shots will kill the end of Level 1 Boss