P CODES (POWERTRAIN) P0400 - P0499 P0401 Questions

Obd Kicks 401 Code. Hold Hand Near Firewall On Passenger Side And Can Feel Air Blowing Up. When Driving Sound Is Louder During Acceleration...

I Have Changed Egr Valve,cleaned Ports, Changed Engine Temp Sensor, Tps,map, Sensor, Plugs,wires.....what Am I Missing Here?

I Parked This Car For About 4 Months. Before I Parked The Car It Had Two Codes, One Had To Do With The O2 Sensor, And I Can't Remember...

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 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...

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...

Okay Here Goes. I Have A 1999 Saturn Sl2. I Got The Infamous P0401 Engine Code, Which Means Which Is For Egr Insufficient Flow. Okay...

Code P0401 Is Not The Pressure Sensor What Else Could Be That I Need To Change The Egr Valve

I Have A 2004 Ford Explorer 6 Cylinder. I Need To Get The Car Registered, However The Check Engine Light Is On. I Checked, And The Code Is...