O2 Sensor code - P0053 Heater resistance Bank 1 Sensor 1

[Enjoyneering]

Think they are talking about the external filter .

I think you stuck in the past Wyr. This is screenshot of KIA RIO5 2010 manual, p.194



The KIA's fuel filter is a part of fuel pump. Maybe it's going to be surprise for you, but it's a common practice now to integrate the fuel filter and the strainer into the pump body. I agree it's not very handy when the time comes to replace it, but at list other makers sell the repair kits.