Engine Performance problem
2004 Honda Civic 4 cyl Two Wheel Drive Automatic
I Have a civic 04 ex what is a po420 code what is that i need more infro on that...
2004 Honda Civic 4 cyl Two Wheel Drive Automatic
I Have a civic 04 ex what is a po420 code what is that i need more infro on that...
Feb 18, 2009 at 2:24 AM