BlameThePixel!

Weapons (tier 1):
Press R1, R2, L1, R2, Left, Down, Right, Up, Left, Down, Right, Up during game play. A message will confirm correct code entry. 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.
Information in this section was contributed by BurnFreak.tk-Crew, The5Venomz and DarkRaven.

Note: To get unlimited ammunition for this or the other weapons tiers, repeatedly enable the code until no ammunition number appears beneath the gun pictures.
Information in this section was contributed by SoUfBAlLeR30575.

Weapons (tier 2):
Press R1, R2, L1, R2, Left, Down, Right, Up, Left, Down(2), Left during game play. A message will confirm correct code entry. 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.
Information in this section was contributed by BurnFreak.tk-Crew, The5Venomz, and DarkRaven.

Weapons (tier 3):
Press R1, R2, L1, R2, Left, Down, Right, Up, Left, Down(3) during game play. A message will confirm correct code entry. 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.
Information in this section was contributed by BurnFreak.tk-Crew , The5Venomz, and DarkRaven.

Bounty on your head:
Press Down, Up(2), Up, X, R2, R1, L2(2) during game play. A message will confirm correct code entry. Repeat this code to disable its effect.
Information in this section was contributed by Mario Groppi.

Armor, health, and money:
Press R1, R2, L1, X, Left, Down, Right, Up, Left, Down, Right, Up during game play. A message will confirm correct code entry. Note: You must enable this code multiple times to increase street creds.
Information in this section was contributed by Robert J and DarkRaven.

Note: If this code is enabled when your car is smoking or damaged it will get repaired.
Information in this section was contributed by D3dev3d.

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.

Raise wanted level:
Press R1(2), Circle, R2, Left, Right, Left, Right, Left, Right during game play. A message will confirm correct code entry.
Information in this section was contributed by kons7.

Lower wanted level:
Press R1(2), Circle, R2, Up, Down, Up, Down, Up, Down during game play. A message will confirm correct code entry.
Information in this section was contributed by kons7.

Maximum muscle:
Press Triangle, Up(2), Left, Right, Square, Circle, Left during game play. A message will confirm correct code entry.
Information in this section was contributed by Silver007, kons7, and Mario Groppi.

Maximum fat:
Press Triangle, Up(2), Left, Right, Square, Circle, Down during game play. A message will confirm correct code entry. Note: This will reduce the muscle stat to zero.
Information in this section was contributed by Silver007.

No fat or muscle:
Press Triangle, Up(2), Left, Right, Square, Circle, Right during game play. A message will confirm correct code entry.
Information in this section was contributed by Silver007.

CJ jumps higher:
Press Up(2), Triangle(2), Up(2), Left, Right, Square, R2(2) during game play. A message will confirm correct code entry. Repeat this code to disable its effect.
Information in this section was contributed by Rory Petts and Mario Groppi.

Perfect handling:
Press Triangle, R1(2), Left, R1, L1, R2, L1 during game play. A message will confirm correct code entry. After this code is enabled press L3 to make your car jump. Repeat this code to disable its effect.
Information in this section was contributed by kons7 and Mario Groppi.

Aggressive traffic:
Press R2, Circle, R1, L2, Left, R1, L1, R2, L2 during game play. A message will confirm correct code entry. Note: This will also increase police activity. Repeat this code to disable its effect.
Information in this section was contributed by kons7 and Mario Groppi.

Faster cars:
Press Right, R1, Up, L2(2), Left, R1, L1, R1(2) during game play. A message will confirm correct code entry. Repeat this code to disable its effect.
Information in this section was contributed by Zerocool3166 and Mario Groppi.

Invisible cars:
Press Triangle, L1, Triangle, R2, Square, L1(2). Repeat this code to disable its effect.
Information in this section was contributed by Zerocool3166 and Mario Groppi.

Drive on water:
Press Right, R2, Circle, R1, L2, Square, R1, R2 during game play. A message will confirm correct code entry. Repeat this code to disable its effect.
Information in this section was contributed by Mario Groppi.

Vehicle of death:
Press L1, L2(2), Up, Down(2), Up, R1, R2(2) during game play. A message will confirm correct code entry. Any vehicle driven becomes invincible and has the ability to destroy anything it touches. Repeat this code to disable its effect.
Information in this section was contributed by Silver007 and kons7.

Note: This code will eventually wear off if you run into many cars with the same vehicle. It runs out faster when the "Destroy all vehicles" code is enabled over thirty times. Also, if you enable this code when inside a vehicle, the vehicle will explode others on contact, but your car will not be "shielded" as it would be if you entered the code before entering the vehicle. Therefore, this results in your vehicle exploding as well. If you do happen to enable this code inside a vehicle, get out, then get back in and it should function normally.
Information in this section was contributed by Mario Groppi.

Black traffic:
Press Circle, L2, Up, R1, Left, X, R1, L1, Left, Circle during game play. A message will confirm correct code entry. Repeat this code to disable its effect.
Information in this section was contributed by Mario Groppi.

Pink traffic:
Press Circle, L1, Down, L2, Left, X, R1, L1, Right, Circle during game play. A message will confirm correct code entry. Repeat this code to disable its effect.
Information in this section was contributed by Mario Groppi.

All traffic lights remain green:
Press Right, R1, Up, L2(2), Left, R1, L1, R1(2) during game play. A message will confirm correct code entry. Repeat this code to disable its effect.
Information in this section was contributed by Bobby and Mario Groppi.

Destroy cars:
Press R2, L2, R1, L1, L2, R2, Square, Triangle, Circle, Triangle, L2, L1 during game play. A message will confirm correct code entry. Repeat this code to disable its effect.
Information in this section was contributed by Mario Groppi.

Flying boats:
Press R2, Circle, Up, L1, Right, R1, Right, Up, Square, Triangle during game play. A message will confirm correct code entry. Repeat this code to disable its effect.
Information in this section was contributed by Mario Groppi.

Massive bunny hops:
Press Triangle, Square, Circle, Circle, Square, Circle, Circle, L1, L2(2), R1, R2 during game play. A message will confirm correct code entry. Get a BMX bike and bunny hop to travel massive distances. Repeat this code to disable its effect.
Information in this section was contributed by Silver007, kons7, and Mario Groppi.

Spawn Bloodring Banger:
Press Down, R1, Circle, L2(2), X, R1, L1, Left(2) during game play. A message will confirm correct code entry.

Spawn Caddy:
Press Circle, L1, Up, R1, L2, X, R1, L1, Circle, X during game play. A message will confirm correct code entry.

Spawn Hotring Racer #1:
Press R1, Circle, R2, Right, L1, L2, X(2), Square, R1 during game play. A message will confirm correct code entry.

Spawn Hotring Racer #2:
Press R2, L1, Circle, Right, L1, R1, Right, Up, Circle, R2 during game play. A message will confirm correct code entry.

Spawn Hydra:
Press Triangle(2), Square, Circle, X, L1(2), Down, Up during game play. A message will confirm correct code entry.
Information in this section was contributed by Rory Petts and skipabeatx.

Spawn Jetpack:
Press L1, L2, R1, R2, Up, Down, Left, Right, L1, L2, R1, R2, Up, Down, Left, Right during game play. A message will confirm correct code entry.
Information in this section was contributed by casey sloop, Silver007, kody morse, Wyatt Schutte, Kutowy, Baraka54, and Danny B.

Spawn Monster Truck:
Press Right, Up, R1(3), Down, Triangle(2), X, Circle, L1(2) during game play. A message will confirm correct code entry.
Information in this section was contributed by Silver007 and kons7.

Spawn Quad bike:
Press Left(2), Down(2), Up(2), Square, Circle, Triangle, R1, R2 during game play. A message will confirm correct code entry.
Information in this section was contributed by Rory Petts and skipabeatx.

Spawn Parachute:
Press Left, Right, L1, L2, R1, R2(2), Up, Down, Right, L1 during game play. A message will confirm correct code entry.
Information in this section was contributed by Silver007.

Spawn Ranger:
Press Up, Right(2), L1, Right, Up, Square, L2 during game play. A message will confirm correct code entry.

Spawn Rhino tank:
Press Circle(2), L1, Circle(3), L1, L2, R1, Triangle, Circle, Triangle during game play. A message will confirm correct code entry.
Information in this section was contributed by kons7.

Spawn Romero:
Press Down, R2, Down, R1, L2, Left, R1, L1, Left, Right during game play. A message will confirm correct code entry.

Spawn Stretch:
Press R2, Up, L2, Left(2), R1, L1, Circle, Right during game play. A message will confirm correct code entry.

Spawn Stunt Plane:
Press Circle, Up, L1, L2, Down, R1, L1(2), Left(2), X, Triangle during game play. A message will confirm correct code entry.
Information in this section was contributed by Silver007 and kons7.

Spawn Trashmaster:
Press Circle, R1, Circle, R1, Left(2), R1, L1, Circle, Right during game play. A message will confirm correct code entry.

Spawn Vortex:
Press Triangle(2), Square, Circle, X, L1, L2, Down(2) during game play. A message will confirm correct code entry.
Information in this section was contributed by Rory Petts and skipabeatx.

Pedestrians riot:
Press Down, Left, Up, Left, X, R2, R1, L2, L1 during game play. A message will confirm correct code entry. Repeat this code to disable its effect.
Information in this section was contributed by Mario Groppi.

Pedestrians have weapons:
Press R2, R1, X, Triangle, X, Triangle, Up, Down during game play. A message will confirm correct code entry. Repeat this code to disable its effect.
Information in this section was contributed by Mario Groppi.

Slow down time:
Press Triangle, Up, Right, Down, Square, R2, R1 during game play. A message will confirm correct code entry.
Information in this section was contributed by kons7.

Speed up time:
Press Circle(2), L1, Square, L1, Square(3), L1, Triangle, Circle, Triangle during game play. A message will confirm correct code entry.
Information in this section was contributed by kons7.

Slow motion:
Press Triangle, Up, Right, Down, Square, R2, R1 during game play. A message will confirm correct code entry.

Fast motion:
Press Triangle, Up, Right, Down, L2, L1, Square during game play. A message will confirm correct code entry.
Information in this section was contributed by kons7.

Cloudy weather:
Press R2, X, L1(2), L2(3), Triangle during game play. A message will confirm correct code entry.
Information in this section was contributed by kons7.

Foggy weather:
Press R2, X, L1(2), L2(3), X during game play. A message will confirm correct code entry.
Information in this section was contributed by kons7.

Stormy weather:
Press R2, X, L1(2), L2(3), Circle during game play. A message will confirm correct code entry.
Information in this section was contributed by kons7.

Very cloudy weather:
Press R2, X, L1(2), L2(3), Square during game play. A message will confirm correct code entry.
Information in this section was contributed by kons7.

Sunny weather:
Press R2, X, L1(2), L2(3), Triangle during game play. A message will confirm correct code entry.
Information in this section was contributed by kons7.

Very sunny weather:
Press R2, X, L1(2), L2(3), Down during game play. A message will confirm correct code entry.

Beach Party:
Press Up(2), Down(2), Square, Circle, L1, R1, Triangle, Down during game play. A message will confirm correct code entry. Pedestrians turn into girls wearing swimsuits, vehicles will be beach style, and CJ will be dressed in shorts and sandals.
Information in this section was contributed by Silver007 and kons7.

Commit suicide:
Press Right, L2, Down, R1, Left(2), R1, L1, L2, L1 during game play. A message will confirm correct code entry.
Information in this section was contributed by kons7.