Weapons (tier 1):
Press R1, R2, L1, R2, Left, Down, Right, Up, Left, Down, Right, Up during game play. If entered properly, you should see a message. The least powerful weapons in each category and rocket launcher will be unlocked. Note: Enabling this code will cause your street creds to drop in points. You can check your creds in the stats menu at the pause screen. If you are in the negative, you are a Playa-Hater.

Weapons (tier 2):
Press R1, R2, L1, R2, Left, Down, Right, Up, Left, Down(2), Left during game play. If entered properly, you should see a message. The moderate powered weapons in each category will be unlocked, including the flame thrower and sniper rifle. Note: Enabling this code will cause your street creds to drop in points. You can check your creds in the stats menu at the pause screen. If you are in the negative, you are a Playa-Hater.

Weapons (tier 3):
Press R1, R2, L1, R2, Left, Down, Right, Up, Left, Down(3) during game play. If entered properly, you should see a message. The high powered weapons in each category will be unlocked, including the chainsaw and lock-on bazooka. Note: Enabling this code will cause your street creds to drop in points. You can check your creds in the stats menu at the pause screen. If you are in the negative, you are a Playa-Hater.

Bounty on your head:
Press Down, Up(2), Up, X, R2, R1, L2(2) during game play. If entered properly, you should see a message.

Armor, health, money, and street creds:
Press R1, R2, L1, X, Left, Down, Right, Up, Left, Down, Right, Up during game play. If entered properly, you should see a message. Note: You must enable this code multiple times to increase street creds.

Note: If this code is enabled when your car is smoking or damaged it will get repaired.

During various missions where you are in a car while someone else drives and you shoot (for example, Reuniting The Families), enabling this code will instead blow the car up, failing the mission.
Information in this section was contributed by handymanbandr.

$250,000:
Press R1, R2, L1, X, Left, Down, Right, Up, Left, Down, Right, Up during game play. If entered properly, you should see a message.
Information in this section was contributed by scorp_neo.

Money:
Press R1, R2, L1, R2, X, Left, Down, Right, Up, Left, Down, Right, Up during game play. If entered properly, you should see a message.
Information in this section was contributed by Angiebja03.

Raise wanted level:
Press R1(2), Circle, R2, Left, Right, Left, Right, Left, Right during game play. If entered properly, you should see a message.

Lower wanted level:
Press R1(2), Circle, R2, Up, Down, Up, Down, Up, Down during game play. If entered properly, you should see a message.

Perfect handling:
Press Triangle, R1(2), Left, R1, L1, R2, L1 during game play. If entered properly, you should see a message. After this code is enabled press L3 to make your car jump.

Aggressive traffic:
Press R2, Circle, R1, L2, Left, R1, L1, R2, L2 during game play. If entered properly, you should see a message. Note: This will also increase police activity.

Faster cars:
Press Right, R1, Up, L2(2), Left, R1, L1, R1(2) during game play. If entered properly, you should see a message.
Information in this section was contributed by Zerocool3166.

Invisible cars:
Press Triangle, L1, Triangle, R2, Square, L1(2).
Information in this section was contributed by Zerocool3166.

Drive on water:
Press Right, R2, Circle, R1, L2, Square, R1, R2 during game play. If entered properly, you should see a message.

Black traffic:
Press Circle, L2, Up, R1, Left, X, R1, L1, Left, Circle during game play. If entered properly, you should see a message.

Pink traffic:
Press Circle, L1, Down, L2, Left, X, R1, L1, Right, Circle during game play. If entered properly, you should see a message.

All traffic lights remain green:
Press Right, R1, Up, L2(2), Left, R1, L1, R1(2) during game play. If entered properly, you should see a message.
Information in this section was contributed by Bobby.

Destroy cars:
Press R2, L2, R1, L1, L2, R2, Square, Triangle, Circle, Triangle, L2, L1 during game play. If entered properly, you should see a message.

Flying boats:
Press R2, Circle, Up, L1, Right, R1, Right, Up, Square, Triangle during game play. If entered properly, you should see a message.

Spawn Bloodring Banger:
Press Down, R1, Circle, L2(2), X, R1, L1, Left(2) during game play. If entered properly, you should see a message.

Spawn Caddy:
Press Circle, L1, Up, R1, L2, X, R1, L1, Circle, X during game play. If entered properly, you should see a message.

Spawn Hotring Racer #1:
Press R1, Circle, R2, Right, L1, L2, X(2), Square, R1 during game play. If entered properly, you should see a message.

Spawn Hotring Racer #2:
Press R2, L1, Circle, Right, L1, R1, Right, Up, Circle, R2 during game play. If entered properly, you should see a message.

Spawn Jetpack:
Press L1, L2, R1, R2, Up, Down, Left, Right, L1, L2, R1, R2, Up, Down, Left, Right during game play. If entered properly, you should see a message.

Spawn Ranger:
Press Up, Right(2), L1, Right, Up, Square, L2 during game play. If entered properly, you should see a message.

Spawn Rhino tank:
Press Circle(2), L1, Circle(3), L1, L2, R1, Triangle, Circle, Triangle during game play. If entered properly, you should see a message.

Spawn Romero:
Press Down, R2, Down, R1, L2, Left, R1, L1, Left, Right during game play. If entered properly, you should see a message.

Spawn Stretch:
Press R2, Up, L2, Left(2), R1, L1, Circle, Right during game play. If entered properly, you should see a message.

Spawn Trashmaster:
Press Circle, R1, Circle, R1, Left(2), R1, L1, Circle, Right during game play. If entered properly, you should see a message.

Pedestrians riot:
Press Down, Left, Up, Left, X, R2, R1, L2, L1 during game play. If entered properly, you should see a message.

Pedestrians have weapons:
Press R2, R1, X, Triangle, X, Triangle, Up, Down during game play. If entered properly, you should see a message.

Slow down time:
Press Triangle, Up, Right, Down, Square, R2, R1 during game play. If entered properly, you should see a message.

Speed up time:
Press Circle(2), L1, Square, L1, Square(3), L1, Triangle, Circle, Triangle during game play. If entered properly, you should see a message.

Slow motion:
Press Triangle, Up, Right, Down, Square, R2, R1 during game play. If entered properly, you should see a message.

Fast motion:
Press Triangle, Up, Right, Down, L2, L1, Square during game play. If entered properly, you should see a message.

Cloudy weather:
Press R2, X, L1(2), L2(3), Triangle during game play. If entered properly, you should see a message.

Foggy weather:
Press R2, X, L1(2), L2(3), X during game play. If entered properly, you should see a message.

Stormy weather:
Press R2, X, L1(2), L2(3), Circle during game play. If entered properly, you should see a message.

Very cloudy weather:
Press R2, X, L1(2), L2(3), Square during game play. If entered properly, you should see a message.

Sunny weather:
Press R2, X, L1(2), L2(3), Triangle during game play. If entered properly, you should see a message.

Very sunny weather:
Press R2, X, L1(2), L2(3), Down during game play. If entered properly, you should see a message.

Commit suicide:
Press Right, L2, Down, R1, Left(2), R1, L1, L2, L1 during game play. If entered properly, you should see a message. 

spawn jetpack: press L1 L2 R1 R2 up down left right repeat this twice

spawn stunt plane: press circle up L1 L2 down R1 L1 L1 left left x triangle

spawn parachute:press left right L1 L2 R1 R2 R2 up down right L1

spawn monster truck: press right up R1 R1 R1 down triangle triangle x circle L1 L1

spawn an ATV: press left left down down up up square circle triangle R1 R2

spawn a hydra: press triangle triangle square circle x L1 L1 down up

spawn a hovercraft:press triangle triangle square circle x L1 L2 down down

jump high:press up up triangle triangle up up left right square R2 R2

vehicle of death: press L1 L2 L2 up down down up R1 R2 R2

diesel punches: press up left x triangle R1 circle circle circle L2

maxium muscle: press triangle up up left right square circle left

huge bmx jumps:triangle square circle circle square circle circle L1 L2 L2 R1 R2

max lung capacity:press down left L1 down down R2 down L2 down

Affectionate woman:circle x L1 L1 R2 x x circle circle