P CODES (POWERTRAIN) P0400 - P0499

Replaced O2 Sensor. Would Like To Let Roy Know We Still Have Not Found The Problem To Flunk Emissions. Found A Bad Spark Plug, Bought New...

Engine Light Shows Trouble P0480. By The Way How Many Relays Are On My Car For The Cooling Fan? Thanks

I Have A Live Data Freeze When Code Occurred.

They've Told Me That This P0455 Code Is Either The Fuel Cap Or The Vent Valve Which Is Next To The Fuel Tank In The Rear Of The Vehicle...

I Have The Check Engine, Vsc, And Trac Off Lights On My Instrument Panel. When I Have Had It Checked, I Was Told It Was Reading P0420 -...

I Have Changed Egr Valve, Cleaned Ports, Changed Engine Temp Sensor, Tps, Map, Sensor, Plugs, Wires. What Am I Missing Here?

Engine Performance Problem 1997 Geo Metro 4 Cyl Front Wheel Drive Automatic I Am Working On A 97 Geo Metro Lsi With A P0400 Code That...

The Engine Light Came On. We Got The Car Scanned And Error P0455 And P0457 Came Up. We Were Told To Look For A Crack Or Leak In A Hose In...

I've Done Pretty Much Everything. But Still The Code Keeps Popping Up. The Code Means (secondary Air Injection System Incorrect Flow...

My Vehicle Listed Above Has Had A Ton Of Issues. The Biggest Was Replacement Of The Timing Chain, Now It Burns A Little Oil. The Dealer...