NISSAN P CODES (POWERTRAIN) P0400 - P0499

I Removed The Cat Converter, But There Seems To Me No Damage Visible. Please Advise

I Just Recently Gotten The Code P0400 Yesterday But I Also Had The Code P0171 For Like A Week, I Have Been Searching Up Ways To Fix This...

The Car Turns Over But Won't Crank. We Put A Ogd Reader On It And Got The Code P0455 And So We Replaced The Gas Cap And Now We Are Cleaning...

Got In My Car 3 Weeks Ago In The Vegas Heat And The Air Conditioning Coming Threw The Vents Had Reduced Tremendously, When Put On Only...

Check Engine Light On, Too Many Possibilities From Other Sites, Gas Cap, Evap Line From Gas Tank. Need A Better Reference To Help Owner

What To Do Next After Replacing Erg Valve? The Check Engine Is Still Lit. Do The Computer Need To Be Reset? Or Do I Need To Do Something...

Got My Oil Change Done This Sunday At Local Chevron Station For My 2001 Nissan Altima (i Put Valvoline Oil). They Told Me That Fuel Injector...

Trouble Code P0420-catalyst System: Efficiency Below Threshold (bank 1).

"exhaust Gas Recirculation Flow Malfunction". What Causes It And How Can You Fix It.

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...