P CODES (POWERTRAIN) P0400 - P0499

My Car Has Been Sitting For About 9 Months. The Check Engine Light Was On I Had It Shut Off And It's Still P0446. I Just Replace The...

I Have A P0430 Code Pop Up Says Bank 2 Only Would This Be The Sensor Right After The Catalytic Converter?

Exhaust Gas Recirculation Flow Insufficient Detected. How Should I Go About This? Steps? Thanks

Hello, I Have An Issue With The Egr Valve On A 2001 3.8l Chevy Impala. I Get The Dtc P0401code, Insufficient Flow. I Replaced The Egr...

I Have A 2002 With A P0420 Cat Code. The Factory Cat Was Replaced A Couple Of Years Ago After Becoming Clogged, And Had No Issues To Almost...

Car Passed New Jersey Dmv Inspection Post Repairs To Mass Airflow Issues With Emissions. Three Weeks Later Engine Light Comes On Again And...

I Keep Getting This P0401 Code. I Changed Out The Egr Valve Made Sure The Egr Tubes Were Clean And Changed Out The Map Sensor. I Am At My...

Hello Again, Sorry To Keep Bothering You Guys But, On The Purge Vac Diagnostic Switch There Is Another Vac Fitting On The Left Side Of The...

Trying To Troubleshoot This Thing Slowly. All The Vacuum Lines Are Off And Even The Red And Green Hard Lines Are Off And Don't...

Code P0449 Came On. I Was Told To Replace The Solenoid Vent Canister. I Did, Reset The Code And It Popped Right Back Up. Tried Resetting It...