Cheats Affecting CJ

Many of these cheats are the same as for Vice City.  You might try a few codes from there as well.

Commit Suicide
During gameplay press Right, L2, Down, R1, Left, Left, R1, L1, L2, L1

Max Out Health, Armor & Ammo and Get Cash
During gameplay press R1, R2, L1, X, Left, Down, Right, Up, Left, Down, Right, Up

Get All Weapons 1 (Bat,  Pistol,  Shotgun,  Mini SMG,  AK 47,  Rocket Launcher,  Molotov Cocktail,  Spray Can,  Brass Knuckles)
During gameplay press R1, R2, L1, R2, Left, Down, Right, Up, Left, Down, Right, Up

Get All Weapons 2 (Knife,  Pistol,  Sawnoff Shotgun,  Tec 9,  Sniper Rifle,  Flamethrower,  Grenades,  Fire Extinguisher)
During gameplay press R1, R2, L1, R2, Left, Down, Right, Up, Left, Down, Down, Down

Get All Weapons 3 (Chainsaw,  Silenced Pistol,  Combat Shotgun,  M4,  Bazooka,  Plastic Explosive)
During gameplay press R1, R2, L1, R2, Left, Down, Right, Up, Left, Down, Down, Left

Raise Your Wanted Level
During gameplay press R1, R1, Circle, R2, Left, Right, Left, Right, Left, Right

Lower Your Wanted Level
During gameplay press R1, R1, Circle, R2, Up, Down, Up, Down, Up, Down

Freeze Your Wanted Level
During gameplay press Circle, Right, Circle, Right, Left, Square, Triangle, Up

6 Star Wanted Level
During gameplay press Circle, Right, Circle, Right, Left, Square, X, Down

Infinite Oxygen
During gameplay press Down, Left, L1, Down, Down, R2, Down, L2, Down

Infinite Health
During gameplay press Down, X, Right, Left, Right, R1, Right, Down, Up, Triangle

Infinite Ammo
During gameplay press L1, R1, Square, R1, Left, R2, R1, Left, Square, Down, L1, L1

Never Hungry
During gameplay press Square, L2, R1, Triangle, UP, Square, L2, Up, X

Mega Punch
During gameplay press Up, Left, X, Triangle, R1, Circle, Circle, Circle, L2

Mega Jump
During gameplay press Up, Up, Triangle, Triangle, Up, Up, Left, Right, Square, R2, R2

Hookers Pay You
During gameplay press Right, L2, L2, Down, L2, Up, Up, L2, R2

Max Respect
During gameplay press L1, R1, Triangle, Down, R2, X, L1, Up, L2, L2, L1, L1

Max Sex Appeal
During gameplay press Circle, Triangle, Triangle, Up, Circle, R1, L2, Up, Triangle, L1, L1, L1

Max Vehicle Stats
During gameplay press Square, L2, X, R1, L2, L2, Left, R1, Right, L1, L1, L1

Max Weapon Stats
During gameplay press Down, Square, X, Left, R1, R2, Left, Down, Down, L1, L1, L1

Max Muscle
During gameplay pressTriangle, Up, Up, Left, Right, Square, Circle, Left

No Muscle or Fat
During gameplay press Triangle, Up, Up, Left, Right, Square, Circle, Right

Max Fat
During gameplay press Triangle, Up, Up, Left, Right, Square, Circle, Down

Pedestrian Cheats

Enter code during gameplay for the following effects. Enter code again to deactivate.

Recruit Anyone (9mm)
Down, Square, Up, R2, R2, Up, Right, Right, Up

Recruit Anyone (Rockets)
R2, R2, R2, X, L2, L1, R2, L1, Down, X

Peds Attack You
Down, Up, Up, Up, X, R2, R1, L2, L2

Peds Attack You (w/ guns)
X, L1, Up, Square, Down, X, L2, Triangle, Down, R1, L1, L1

Peds Riot
Down, Left, Up, Left, X, R2, R1, L2, L1

Peds Have Weapons
R2, R1, X, Triangle, X, Triangle, Up, Down

Chaos Mode
L2, Right, L1, Triangle, Right, Right, R1, L1, Right, L1, L1, L

Beach Party
Up, Up, Down, Down, Square, Circle, L1, R1, Triangle, Down

Funhouse Theme
Triangle, Triangle, L1, Square, Square, Circle, Square, Down, Circle

Sh*t Cars Theme
L2, Right, L1, Up, X, L1, L2, R2, R1, L1, L1, L1

Country Theme
Left, Right, Right, Down, Left, R1, R2, Square, L1, L2, L1, L1

Ninja Theme
X, X, Down, R2, L2, Circle, R1, Circle, Square

Peds Are Elvis
L1, Circle, Triangle, L1, L1, Square, L2, Up, Down, Left

Slut Magnet
Square, Right, Square, Square, L2, X, Triangle, X, Triangle

Gang Members Everywhere
Left, Right, Right, Right, Left, X, Down, UP, Square, Right

Gangs Rule the Streets
L2, UP, R1, R1, Left, R1, R1, R2, Right, Down

Time Cheats

Game Clock Sped Up
During gameplay press Circle, Circle, L1, Square, L1, Square, Square, Square, L1,  Triangle, Circle, Triangle

Time Stopped at 21:00
During gameplay press Left, Left, L2, R1, Right, Square, Square, L1, L2, X

Always Midnight
During gameplay press Square, L1, R1, Right, X, Up, L1, Left, Left

Slow Motion
During gameplay press Triangle, Up, Right, Down, Square, R2, R1

Adrenaline Mode
During gameplay press X, X, Square, R1, L1, X, Down, Left, X

Move Fast
During gameplay press Triangle, Up, Right, Down, L2, L1, Square


Vehicle Cheats

Blow Up All Cars
During gameplay press R2, L2, R1, L1, L2, R2, Square, Triangle, Circle, Triangle, L2, L1

Drive on Water
During gameplay press Right, R2, Circle, R1, L2, Square, R1, R2

Car Handles Funny and L3 makes you Jump
During gameplay press Triangle, R1, R1, Left, R1, L1, R2, L1

Faster Cars
During gameplay press Right, R1, Up, L2, L2, Left, R1, L1, R1, R1

Dodo boats
During gameplay press R2, Circle, Up, L1, Right, R1, Right, Up, Square, Triangle

Taxis Have Nitrous
During gameplay press Up, X, Triangle, X, Triangle, X, Square, R2, Right

Full Aiming While Driving
During gameplay press Up, Up, Square, L2, Right, X, R1, Down, R2, Circle

Improved Handling
During gameplay press Triangle, R1, R1, Left, R1, L1, R2, L1

Traffic Cheats

Enter code during gameplay for the following effects:

Aggressive Traffic
R2, Circle, R1, L2, Left, R1, L1, R2, L2

Green Traffic Lights
Right, R1, Up, L2, L2, Left, R1, L1, R1, R1

Reduced Traffic
X, Down, UP, R2, Down, Triangle, L1, Triangle, Left

Traffic is Fast Cars
Up, L1, R1, UP, Right, UP, X, L2, X, L1

Traffic is Country Vehicles
L1, L1, R1, R1, L2, L1, R2, Down, Left, Up

Invisible Traffic
Triangle, L1, Triangle, R2, Square, L1, L1

Black Traffic
Circle, L2, Up, R1, Left, X, R1, L1, Left, Circle

Pink Traffic
Circle, L1, Down, L2, Left, X, R1, L1, Right, Circle