P CODES (POWERTRAIN) P0400 - P0499 P0404 Questions

Failed Emission Test With Codes P0135, P0301 And P0404. What Parts Do I Need To Replace And Where Are They Located? I Think Egr Is One Of...

P0404 Has Come Up Three Times In The Last 10 Months And Has Been Reset In All Cases. Once In Sept Of 2019 And Twice This Past Week. When...

Performed All Egr Tests. Still Getting P0404. Same Test Results On Three Different Units-2 Used, 1 Brand New. Results As Follows,(no...

I Got Loss Of Power From My Fuso And Did A Scan On It, Got Code Po404 For Egr Range/performance. Does Anyone Here Have A Factory Manual For...

Computer Problem 2005 Dodge Caravan Front Wheel Drive Automatic 69000 Miles My Check Engine Light Has Been Going On And Off For A...

Check Engine Light Is On. My Garmin Diagnostic Check Says P0404. Ram Is Running Good. What Needs To Be Done? Thanks.

I Was Wondering If I Should Replace My Egr Valve? I Had A P0404 Code So I Took The Valve Off And Cleaned It With Tb Cleaner..replaced The...

I Just Bought This Car Used It Is A One Owner Vehicle And Has 212,000 Miles On It. Seems Pretty Clean For The Age And The Owner Seemed To...

My Vehicle Is Showing This Code After Replacing Faulty Egr Valve. My Mechanic Reset Computer And The Light Came Back. I Know It May Be A...

Car Will Not Go It Takes Forever To Get Passed 20 Mph And Ive Tried Changing Postiion Senosr The Mass Air Flow Sensor The Egr Valve Cleaned...