P CODES (POWERTRAIN) P0400 - P0499 Questions

About A Year Ago In My Car, The Engine Light Appeared. I Used A Scanner To Try And Find Out The Problem, And It Returned A P0400 Code. I...

Engine Performance Problem 1997 Geo Metro 4 Cyl Front Wheel Drive Automatic I Am Working On A 97 Geo Metro Lsi With A P0400 Code That...

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 And...

Engine Performance Problem 1998 Dodge Avenger 6 Cyl Front Wheel Drive Automatic New Plugs, Wires, Cap, Rotor Button, Tps, Carb Cleaner...

This Car Has Had New Egr Valve, Timing Belt, And Lots More.. The Obdii Keeps Telling Us P0400 And Now After Refurbished Ecu, P0400 (egr...

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...

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

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...

Hi, Have Mazda And I Have Check Engine Light On. Comes On Every 30-40 After I Reset It. The Code P0400 Reads: Exhaust Gas Recirculation...

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...