P CODES (POWERTRAIN) P0400 - P0499

I Am Getting A Check Engine Code Of P0420 From My Obdii Meter. I Know This Suggests A Problem With The Cat. To Eliminate Other Possibilities...

I Initially Had The P0430 Popping, Which, Upon Checking Said My Bank 2 Catalyst Is Performing Below The Threshold. The First Step I...

Replaced Dpfe, Egr Solenoid And Egr Valve. Also Cleaned Throttle Body Intake. Replaced Fuel Filter And Used A Fuel Injector Cleaner With...

Good Evening And Thank You In Advance. Recently My Check Engine Light Came On. I Checked It With A Reader And It Showed A P0420 Code. I...

Had To Replace Purge Valve Because It Didn't Want To Start When You Filled It Up. Now It Is Showing Po446 The Evap Control Circuit. Any...

I Bought It From The Auction. Drove It Off The Lot And It Felt Like Limp Mode. I Pulled Over To Have It Towed. When I Got It Home. I Found...

I Got The Error Code P0420, Catalyst System Efficiency Below Threshold Bank1. I Know That I Have A Possible Exhaust System Leak, But...

Hello, I Have The P0420 Code On My Car. I Have Replaced The O2 Sensor And Have Run Cataclean Through It And The Code Has Not Cleared. When...

So, I Have Been Having Issues With A P0449 Code. At The Canister I Have Disconnected Wiring Harness. Testing The White Wire With...

In June My Car Developed A Leak At The Clamp Where The Y Pipe Meets The Engine. I Took It To A Mechanic Who Replaced The Whole Pipe. I...