P CODES (POWERTRAIN) P0400 - P0499

I Have A 2001 Kia Sportage With Engine Code P0422 I Recently Purchesed The Car And Durring Test Drive I Drove It For About 30 Miles Ranging...

The Same Probelem Came Up At Around 38900 Miles, And The Spark Plugs, Wires, And Egr Were Replace. Why So Many Failures During The Life...

Have P0401 Code Egr. I Have Changed The Egr Valve, Egr Solenoid And Sensor. Still Have The Code.

I Have A 2002 Mustang, It Passed Smog Last April.I.M Selling The Car And Need To Smog.I Took It In And Failed Smog Code P0401. Have...

I Was Driving Home From Work Today When My "indicator Malfunction Light" Came On. I Am Getting Diagnostic Code P0457 When I Toggle The Keys...

I Don't Know What Needs To Be Done To Fix Evaporative Emission Control System Vent Control Circuit Malfunction. I Also Have A Problem Water...

Check Engine Light On, Too Many Possibilities From Other Sites, Gas Cap, Evap Line From Gas Tank. Need A Better Reference To Help Owner

On Avensis Mil Light Goes On. I Reset It With Obd Reader And Light Goes On Again After 2-3 Days And 60- 150 Miles Of Driving. Usin Obd...

I Have A 1997 Ford Taurus. The Check Engine Light Is On In The Car. I Have Recently Replaced Both Downstream O2 Sensors And Reset The Check...

I'm Hoping Someone Can Offer Some Assistance. I've Got The Vehicle Listed Above T6. Literally Just Got It Yesterday Shipped From...