The following are known Action Replay Codes for Gran Turismo on Sony Playstation (PS1).

The codes should work with the region specified but may work for other regions as well.

Device Compatibility: Action Replay, CodeBreaker & GameShark

Version 1.0 Codes

Press Start+Select For Cash (Sim)
d009aace0009
8009b86600ff

Start On 2nd Lap (Arc)
d00b68b00000
800b68b00002

Start+Select For A License (Sim)
d009aace0009
8009e3bc0303
d009aace0009
8009e3be0303
d009aace0009
8009e3c00303
d009aace0009
8009e3c20303

Start+Select For B License (Sim)
d009aace0009
8009e3b40303
d009aace0009
8009e3b60303
d009aace0009
8009e3b80303
d009aace0009
8009e3ba0303

Start+Select For Int. License (Sim)
d009aace0009
8009e3c40303
d009aace0009
8009e3c60303
d009aace0009
8009e3c80303
d009aace0009
8009e3ca0303

Start With Bonus Items A (Arc)
d00816d80000
800816d80405
d00816da0000
800816da0004
d00816dc0000
800816dc0405
d00816de0000
800816de0004
d00816e00000
800816e00504
d00816e20000
800816e20004

Start With Bonus Items B (Arc)
d00816e40000
800816e40404
d00816e60000
800816e60004
d00816e80000
800816e80404
d00816ea0000
800816ea0004
d00816ec0000
800816ec0404
d00816ee0000
800816ee0004

Start With Bonus Items C (Arc)
d00816f00000
800816f00404
d00816f20000
800816f20004
d00816f40000
800816f40404
d00816f60000
800816f60004

P1 Nitrous Boost With R3
d00bc1c60004
800b6f3e0006
d00bc1c60004
800b6f420006

P2 Nitrous Boost With R3
d00bc2860004
800b7c720006
d00bc2860004
800b7c760006

Version 1.1 Codes

Press Start+Select For Cash (Sim)
d009ab6e0009
8009b8f600ff

Start On 2nd Lap (Arc)
d00b68e00000
800b68e00002

Start With Bonus Items A (Arc)
d00817880000
800817880405
d008178a0000
8008178a0004
d008178c0000
8008178c0405
d008178e0000
8008178e0000
d00817900000
800817900504
d00817920000
800817920004

Start With Bonus Items B (Arc)
d00817940000
800817940404
d00817960000
800817960004
d00817980000
800817980404
d008179a0000
8008179a0004
d008179c0000
8008179c0404
d008179e0000
8008179e0000

Start With Bonus Items C (Arc)
d00817a00000
800817a00404
d00817a20000
800817a20004
d00817a40000
800817a40404
d00817a60000
800817a60004

Start+Select For A License (Sim)
d009ab6e0009
8009e44c0303
d009ab6e0009
8009e44e0303
d009ab6e0009
8009e4500303
d009ab6e0009
8009e4520303

Start+Select For B License (Sim)
d009ab6e0009
8009e4440303
d009ab6e0009
8009e4460303
d009ab6e0009
8009e4480303
d009ab6e0009
8009e44a0303

Start+Select For Int. License (Sim)
d009ab6e0009
8009e4540303
d009ab6e0009
8009e4560303
d009ab6e0009
8009e4580303
d009ab6e0009
8009e45a0303