Toyota Corolla P Codes (Powertrain)

Had Error Code P0505 On 2000 Toyota Corolla Automatic 1.8 L 4 Cyl 173000. Changed Idle Control Valve. Check Engine Light Went Off, But Came...

Automatic 1.8 L Four Cylinder 173,000 Miles. Changed Idle Control Valve. Check Engine Light Went Off, But Came Back On About An Hour Later....

Hey, I Have A 2001 Toyota Corolla 1.4 With 100,000 Miles. I Got This Code, P0171 (i Think) Something Or Other Was "lean." Anyway, I...