Buick P Codes (Powertrain)

Took Car To Auto Repair Place, Said That My O2 Sensor Was Bad. Had That Replaced, Cost Me $150 Bucks. But Check Engine Light Comes Back On...

I Have A Regal With 117000 Miles On It, And Recently Trouble Code Po481 Came Up. Both Fans Seem To Be Running Fine, What Else Should I...

Service Engine Light Came On And Now It Is Misfiring?

I Have Replaced The Cylinders One And Four Coil Pack, But The P0304 Code Returns Along With Stuttering At Highway Speed.

Need To Pass Smog Check , Code P0171 Keeps Coming Up , No Vaccuum Leaks , Fuel Trim On Bank 1 Sensor 2 Is Up To 99% Bank 1 Sensor 1 Is 25...

Nedd Help With Codes

Hi There, I Have A 98 Buick And I Had The Engine Replaced With A (same Size 3.1) 1999 Engine. Runs Pretty Good, But The Check Engine Light...

Po305 Cylinder 5 Misfire Detected Engine Light Stays On Runs Rough When Gets Hot

I Know It Is A Evap Leak I Just Need Vaccum Diagram So I Can Trace The Hoses.

Engine Performance Problem 1998 Buick Century 6 Cyl Front Wheel Drive 104,00 Miles Car Was Hooked Up To A Code Reader At Carquest And...