P CODES (POWERTRAIN) P0400 - P0499

I Have Replaced All The Cat's (3) And The Same Code Still Comes Up. I Will Be Checking For Leaks, But I Dont Think That Is It. Took It To...

My Lincoln Ls Check Engine Light Is On. It Has Code P0408 Catalyst Efficiency Low Bank Two. I Am Not Sure What Would Be Causing This. I...

I Have Codes P0456 And P0442. I Had A Smoke Test And Diagnostic Done When The P0456 Came On And It Was Written On The Paper As "leak At Vent...

Hello All: My Car Is Overseas. Its Not Driving Well. I Got A Diagnosis On It & These Codes Came Up. P0455 Evaporative Emmission (...

Every So Often The Trouble Code P0403 Pops Up, It States It's A Exhaust Recirculating Problem. When I Questioned Hyundai They Said It...

Po443 Code How Do You Dia. Where The Problem Is

Audi A6 4.2 V8 Quattro 2002. Diagnostic Code P0492 - Faulty Air Solenoid Valve And Air System Relay. What Is The Repair Cost To Fix The...

Scan Reads P0402 Egr Valve Exessive Fuel Flow 2nd Code # P1404 Manfacurer Contrl Auxiliary Emission Controls Plus My Tod Is Flashing Check...

How To Fix Code P0401?

2003 Silverado 5.3 Liter Extended Cab 7z1 With 80,000 Mil. I Have A P0449 Code. I Know What It Mean Already I Have Done My Research But How...