P CODES (POWERTRAIN) P0400 - P0499

What Causes This Code And How To Diagnosis The Causes?

A Few Months Ago I Hit A Pothole And The Check-engine Light Immediately Came Out. The Exhaust Fell And I Put It Up Again. Anyway, While...

Failed Inspection Due Check Engine Light On For 2 Codes Present. Everything Else Passed Also Uses A Lot Of Gas.

Im Getting Code P0446 Which It Is A Evap Condition Mulfunction.I Did Replace The Gas Cap And Vent Valve Solenoid And Purge Solenoid.I...

Secondary Air Injection Valve What Is The Problem Most Likely?

So I Have Been Having 2 Main Problems That Have Been Bugging Me And My Car. First Is A Small Evap Leak (p0442) Code That Displays When I Run...

We've Had Multiple Problems Since Getting The Car. Nobody Seems To Know What Is Going On. I've Had Multiple Misfires (p0302, P0304...

Check Engine Light Is On And The Code Is P0455 And The Rpm Have Been Dropping To Where The Car Shuts Off If There Is No Acceleration Being...

Other Category Problem 2000 Pontiac Grand Prix 126000 Miles I Pulled Off The Access Cover Foor The Fuel Pump And There Are Two...

I Am Getting Mixed Answers From Dealers And Repair Facilities. They Say It's The Catalytic Converter - Bank2. But They Have Difference In...