P CODES (POWERTRAIN) P0400 - P0499

Recently Had This Code Come Up. About Six Months Ago, Replaced The Vsv Valve, So I Am Guessing That Is Not It. Also, The Engine Seems...

I Live In Texas And I Would Like To Know If It's Okay To Replace My Catalyst Converter With An Universal One- I'm Not Sure If It'...

I Own A 2001 Toyota Sienna Xle Van. The Other Day I Backed My Van Up And I Must Have Backed Into A Snowbank, And I Believe I Got Snow In My...

My Car Started To Shake For About Two Seconds And Then A P0420 Code Came Up. Would A Bad Catalytic Converter Cause This? Thanks

I Have The Running Problem Resolved. We Had To Put A Brand New Distributor In It. Now It Is Showing A P0420 Code. But I Have Had My Cataylt...

I've Got A 96 Contour That Will Hesitate When You Press The Accelerator Until It Gets Warmed Up, Then Runs Fine. The Check Engine Light...

I Have A 2000 Ford Ranger With A 3.0 V6, My Check Engine Light Came On And It Is Throwing The Code P0420 Manifold Catalyst Efficiency Low...

My Van's Check Engine Light Is On. I Got The Code Read And It Shows A P0420. I Checked The Book And It Says It Is Catalyst System...

After Operation @ Highway Speed, If O Have To Immediately Drive Slow (e.G. If I Get Caught At A Red Light At The End Of An Exit Ramp) My...

2000 Mazda Protege 4 Cyl Front Wheel Drive 160000 Miles I Live In Tennessee And All Cars Must Pass Emissions Before They Can Be Tagged...