P CODES (POWERTRAIN) P0400 - P0499

Hi, On Dash A Yellow Indicator: Motor Management. Filler Cap Inspection, Nothing Wrong, No Smells Near Any 'position' Of The...

P0420 - Catalyst Efficiency Below Threshold Bank 1 Message Dor Check Engine Light. Repairs Already Completed Catalytic Converter(s)...

I Am Getting A Dtc P0420 From The Computer. The Car Is Running Fine. Does The Catalytic Converter Need To Be Replaced? Could It Be An Oxygen...

Wondering If Its Safe To Run This Seafoam Cleaner Through Electronic Throttle? Started With A Dreaded Rattle That Sounded Like The Converter...

I Had The Check Engine Light Come On And Was Told That The Code Came Up As P0420. He Told Me That It Is A Problem With The Catalyic...

Hi There, I Am Condering Buying This Car For My Teenager. It Has Obviously Been Well Taken Care Of, But When I Went For A Test Drive...

Cat Code Keeps Popping Up, I Have Replaced The Spark Plugs, Map Sensor, Air Filter, And O2 Sensors. Codes Keep Popping Up, But I Don’...

Engine Light Went On. Engine Not Missing. Uses One Quart Of Oil Every 2,500 Miles. Reader Showed Load 48.6%, Btc 199 Degrees F, Shift Bi -...

I Got The Code Awhile Back And Replaced My Catalytic Converter The Manifold One And The Code Came Back Couple Hundred Miles. I Have Checked...

When I Drive My Vehicle For More Than Half An Hour, The Cruise Control Light Flashes And My Check Engine Light Comes On. The Code That Is...