Buick Lesabre P Codes (Powertrain) P0400 - P0499

Check Engine Code P0420.

I Have A Po442 Small Leak In Evaporative Emission System. How Do I Check Cannester And Purge Valve? Or Do I Just Replace Both? If...

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

Can Someone Help Me Please.my Car Runs Perfect Starts Rite Up And Drives Smooth.but After I Stop At A Few Places And Shut The Car Off.i Will...

P0412 Code On My 2000 Buick Lesabre? What Is That

Engine Mechanical Problem 6 Cyl Front Wheel Drive Automatic 61xxx Miles My Check Engine Soon Light Has Been On For A Couple Weeks. I...

I Have Been Driving With The 440 Code (exaust Leak) For Several Months W/ No Problem. Today Car Started Missing When I Tried To Exelerate...

My Check Engine Light Came On. I Just Changed My Plugs And Wires And The Light Turned Off. Now It Is On And The Scanner Gives A Reading...

How Do You Repair Codes Po300 And Po440