P CODES (POWERTRAIN) P0400 - P0499

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...

Hello, Check Engine Light Has Been Coming On And Turning Itself Off For The Last Few Months. It Is Steady, Not Blinking. I Was Told...

I Have A 1999 Mercury Sable Ls Vehicle. It Has 145,000 Kilometers. I Service It Regularly And It Is Not Due For A Tuneup, But Today The...

Would You Know What This Is That Is Not Working Or Needs Replaced?

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...

How Do I Repair A Code From My Obd-2 /code 420 Catalyst System Efficiency Below Threshold ( Bank 1). Spark Plug, Sensor, Or Is It My Cat...

I Am Stumped, I Used A Scanner To Read The Code And Then Erased It Two Days Ago. I Figured It Would Come Back Since It Is Low Catalyst...

Light Just Came On And I Scanned It And This Code Came Up. Where Is This Piece Located.

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