Nissan Maxima P Codes (Powertrain) P0400 - P0499

I Have Just Replaced My Motor. The Check Engine Came On. The Code Is P0420 And P0430. Say It Is About The Catalytic Converter. Can You Tell...

Engine Light Came On Took To Dealer Said It Was Rear Catalytic Converter And Now Engine Is Back On And They Said It Might Be The Front One...

My Car Started To Shake For About Two Seconds And Then A P0420 Code Came Up. Would A Bad Catalytic Converter Cause This? Thanks

It Is Giving A Code P0420 And I Need To Know What It Could Really Be For. Sure I Am A Single Parent And Do Not Have Lot Money, But I Got To...

I Have The Car Listed Above And Check Engine Light Came On. Checked With The Scanner And And Code P0420 Show.

Hi, I Have A Nissan Maxima 01 Which Has Done 138k Miles. Recently When I Was Driving In The Interstate, The Service Engine Soon Light...

Auxilliary Emission Controls Po420, P0430

Good Day To You! I Understand The Diagnostic Code P0400 Refers To A Faulty Egr Valve. I Am Fully Prepared To Replace It, Have A Great...

The Code I Had Befor Was P0100 Wich Was Maf Sensor So I Put A New Maf Sensor And A New Air Charge Temp Sensor And Cleared The Codes But The...