P CODES (POWERTRAIN) P0400 - P0499

Engine Light Came On. This Is The Code That Came Up. Two Days Later The Light Went Off On Its Own. I Made An Appointment To Have The Part...

I Am Still Receiving A P420 Code After Replacing The Entire Exhaust System Including The Exhaust Pipe, Cat Converter, O2 Sensors Before...

Rough Idle/idle Stall. Stalls When Parked. Coolant Is Low. Coolant Was Flushed And Replaced Less Than A Week Ago And It's...

Took Car To Autozone And Got This Code, Definition Is Catalyst Efficiency Low Bank 1. What Does It Mean And How Can I Fix It To Pass...

I Have Replaced All The Cat's (3) And The Same Code Still Comes Up. I Will Be Checking For Leaks, But I Dont Think That Is It. Took It To...

My Lincoln Ls Check Engine Light Is On. It Has Code P0408 Catalyst Efficiency Low Bank Two. I Am Not Sure What Would Be Causing This. I...

I Have Codes P0456 And P0442. I Had A Smoke Test And Diagnostic Done When The P0456 Came On And It Was Written On The Paper As "leak At Vent...

Hello All: My Car Is Overseas. Its Not Driving Well. I Got A Diagnosis On It & These Codes Came Up. P0455 Evaporative Emmission (...

Every So Often The Trouble Code P0403 Pops Up, It States It's A Exhaust Recirculating Problem. When I Questioned Hyundai They Said It...

Po443 Code How Do You Dia. Where The Problem Is