P CODES (POWERTRAIN) P0400 - P0499

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...

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...

My Check Engine Light Was On And Off Periodically After I Bought The Car In 2003 (mostly On). I Was Getting Code P0402 [exhaust Gas...

Engine Light Comes On And Off, Usually Stays On After Gas Gets Below Half Of A Tank. Goes Off After Filling Tank Us. Code Is P0406. Vehicle...

I Have A 2004 Chysler Town & Country With Code P0405 Everything I Read Online Says Egr Valve But Scanner Says Misfire Cylinder 4 I Am Using...

What Do I Need To Check When I Fail Inspection For P0453 Code For 2002 Ford Escort 2.0 Liter Engine

Electrical Problem 2005 Chrysler Town And Country 4 Cyl I Have A 2005 Town & Country - The Code Po406 Is Showing Up For This Vehicle...

Code P0135 Code P0498 Code P2185

Took My Vehicle Listed Above To Dealership Because I Had A Code P0456. They Replaced The Evap Line To The Purge Valve. Went Home Than Next...

I Have A Po442 Code, I Took My Car In And They Fixed A Proportion Valve. And It Still Keeps Coming On As A Code Po442. Any Help?