P CODES (POWERTRAIN) P0400 - P0499

Getting Error Code P0449 And Poor Gas Mileage (down About 25%) "evap Emission Control System Vent Vlv/solenoid Malfunction" Does That...

I Have A 2001 Saturn Sl1 Soc And Recently My Ses Light Started Coming On And Off Irregularly, Showing A P0410 Code. The Sai System Works...

My 99 Chevy Malibu Is Emitting A P0410 Secondary Air Intake Malfunction, But I Can Hear That It Is Operating So I Know That It Is Not...

Code P0401 Is Not The Pressure Sensor What Else Could Be That I Need To Change The Egr Valve

I Have A Problem With The Same Code (p0420) Coming Back. I Own A Actron Auto Scanner Model Cp9180. I Look The Code Up And I Get Catalyst...

I Love Reading Your Site And Now It Is My Turn To Ask You For Advice. I Have A 97 Toyota Camry 4 Cyl With A Code Of P0420 Catalyst...

I Failed My Emmisions Test. The Error Code Reads P0420: Catalyst System Efficiency Below Threshold (bank 1). I Have Been Told This Is O2...

I Have The Images For The Location Of The Fuel Tank Pressure Sensor, But Is Isn't There. I Cant Find It In The Engine Compartment Or At The...

I Have A 2004 Ford Explorer 6 Cylinder. I Need To Get The Car Registered, However The Check Engine Light Is On. I Checked, And The Code...

Engine Light Came On And Car Started Running Very Rough. Was Low On Oil. Had Oil Changed And Fuel System Flushed. Car Ran For 1 Day And...