A very quick one - just double checking

[MasserS]

Got this code:

O2 Sensor Heater Circ.,Bank1-Sensor1 Malfunction

That means faulty o2 sensor doesn't it, just that needs replacing?

[MasserS]

It does mean it needs changing, recommend doing it yourself, as it's straightforward plug and play

[seatcupramad23]

remove old one fit new one and reset the ecu or take the battery off for half and hour