P0155 code. Which O2 sensor is it, front or rear?

[NH-Galant]

Hi there!

I have Galant 2000 V6 federal emission. Yesterday I've got SES light on. AutoZone guys scanned the code. It is P0155 - 'Oxygen sensor (bank 2 sensor 1) heater element performance or rationality malfunction'.

My question is simple: will I be able to replace the sensor by myself? :? Where is this sensor located? Could you point me to it?

Thanks!

Alex.

[NH-Galant]

Appreciated your help, guys! :?

Anyway, it was left front sensor (closest to the radiator cap, in plain English ). Dealer ordered it for me for $135. Tomorrow I'll bolt it in.

Alex.
P.S.: Isn't it good to know that there are places where you can get help? :twisted: