I have hyundai accent 1.5 model 2000
127000 mile
I was had fault code p0422 and when try to remove (oxygen sensor)
can't remove it I cut the electrical wire to remove it but I can't
after that I have (p0135)
I get (DW40) and I remove (oxygen sensor) and replace it by new one
and remove the battery the (check lamp) was closed
after 40 miles (check lamp ) opened
and have this code (P1123) I was change all Spark plugs NGK, and Spark
Plug Wires , and remove battery
after some miles (check lamp) opened
I remove (maf) and cleaned it and return it
what can I do again for resolve this fault code
