Hello , I changed the catalytic converter on my 2002
Seat Ibiza 101hp recently and the mechanic scanned my car for the orange engine light I was getting. It came up with p0135 which he told me refers to the heating element of the oxygen sensor before the catalytic converter that is not working. It requires the change of the unit which after search on the net came up costing 60 euros for the part. I changed it myself, it wasnt too difficult as there are many diy videos around, but the light is still on. I was told it needs erasing through the
obd port. Will get around to it in a couple of days.