P CODES (POWERTRAIN) P0400 - P0499

The Engine Light Comes On And I Get A Fault Code P0420. It Seems To Happen More Often In The Warmer Weatherand In Sport Mode. The Engine Has...

1997 Honda Civic 100040 Mileages. My Check Engine Light Was On. The Diagnostic Trouble Code Is P0420 Catalyst System Efficiency Below...

What Causes The Check Enlight To Come On And Show Error Code P0420? What Do You Have To Do To Repair It?

1997 Ford E-250 4.2l V6 130,000 Miles Evap Emission Control System Vent Circuit Malfunction? The Pcm Has Determined That A Malfunction...

2006 Mitsubishi Outlander Stalls When Coming To A Stop And Only Stays Running With 1 Foot On Gas 1 On Brake

Got The Code And Cant Get Rid Of It, Replaced Canister Vent Solenoid And Still Light Comes On, Do I Need To Replace The Canister Purge...

I Have A 2000 Ford Taurus. I Currently Have 135,000 Miles On It. Recently My "check Engine" Light Came On. I Had It Checked And It Came Back...

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....

Engine Mechanical Problem 2001 Bmw Z3 4 Cyl Two Wheel Drive Manual Just Failed My Inspection Due To Above Code. States Secondary Air...

Which Is A: Secondary Air Injection Switching Valve A Circuit Malfunction. Now, I Wonder Should I Replace The Air Pump Only Or The Shut-...