P CODES (POWERTRAIN) P0400 - P0499

The Vehicles "service Engine Light" Came On Aprox. 4 Months Prior To The First Visit. I Took Vehicle Through 1st Time And Received A Failed...

I Noticed The Clicking Noise When I Got Off The Tollway Where I Was Doing Around Eighty Mph. It Does Not Make The Noise Until I Reach...

This Car Has Only 64k, And Im Getting This Code Copming Up: P0430 - 002 - Lower Limit Exceeded - Mil On. The Check Engine Light Is On, And...

It Started As Codes P0305, P0307. Misfires On Cylinders 5 And 7. I Purchased New Coil Packs For The Two Cylinders And New Plugs For All 8...

I Got A P0430 Code And I Wanna Make Sure It Is Not My Cat Thats Gone Wrong. I Want To Check The O2 Sensors But I Dont Know What The Voltage...

My Car's Cel Is On Always. On Checking I Got Error Code P0430. I Checked On Internet And Found The Problem Is Something Related With...

I Have A 1997 Ford Explorer With Trouble Codes P0430, P0171 & P00174. I Have Cleaned The Maf. Not Sure Where To Go From Here. Kevin. When I...

I Have My Own Scanner And The First Code That I Get Is P0441 Which Is The Evap. Emiss. Syst. Vent Control, The Other Code Is P0446 Which Is...

I Have A P0420 Odbii Error Code P0420 Means "catalyst System Efficiency Below Threshold (bank 1)" I Have Done The Following. 1...

Can Fuel Trims Affect The Efficiency Of The Catalyst. Long Term Is Around +13 Short Term Is Around +6. I Had A P0420 And Went Away.