CHEVROLET P CODES (POWERTRAIN) P0400 - P0499

I Followed Your Response On A Similar Problem And When I Start The Engine With A/c On The Fans Run. I Cleared The Code And It Has Returned....

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...

Evaporative Emission Vent Vlave Solinoid Circuit. What Does This Mean And How Do I Fix The Problem?

Engine Performance Problem 1999 Chevy Suburban V8 Four Wheel Drive Automatic I Need To Know Which Sensor Is Bank 2, I Have 4 Sensors...

In The Morning It Starts Rough And Its Around 40 To 30 Degrees And Sometimes When Its Even 50+ Degrees Also The Idle Seems A Little Bit...

Coming Home Today, The Check Engine Light Came On. Took To Auto Parts Store And Put Code Reader To It. Came Up Code P0420. What Does This...

Hi I Have This Code And I Was Told That I Need To Replace The Fuel Pressure Sensor. Should I Replace The Fuel Regulator As Well? Thanks

I Have A Check Engine Light On Scanner Shows 401, Egr. Replaced It, Cleaned Out Tube, Changed Ecm, Had It On Diagnostics And They Said...

Caty. Conv. Efficiency Low Bank One. The Converter Has Been Replaced And The Code Later Appeared Again. The Oxygen Sensor Was Then Replaced...

Cars Service Engine Soon Light Is On. Had Codes Read Came Up P0440-evap Small Leak/no Flow Condition, And P0459-evaporative Emission Purge...