P CODES (POWERTRAIN) P0400 - P0499 P0420

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...

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...

I Had One Of The Camry's That Had The Oil Consumption Problem To The Point Where It Burned A Quart Of Oil In Under Two Hundred Miles....

This Code Keeps Coming Up And We Are Running Out Of Ideas How To Fix It. Convertor Is Less Than A Year Old And Seems To Be Okay. O2 Sensor...

I Recently Replaced The Radiator, Hoses, Thermostat, Plugs, And Wires. Car Was Ran A Few Times With Misfiring Plug, Now I Get The Cel...