Bank 2 sensor 1 O2 Sensor malfunction (2.5 V6)

[sayn117]

Hey. I picked up a full set of O2 sensors from someone here on the forums to replace a faulty one I have. Could someone point out where the Bank 2 Sensor 1 lambda is located on the 2.5 V6 Galant? Cheers

[evo1rs]

I had this on mine a while back. I'm sure it was the same sensor, from memory it is the left bank upper sensor. So, firewall side, in the manifold.
If you have fault code reader you could unplug them and see which ones bring up fault codes. If not I found that an eBay cheapo elm327 Bluetooth obd adaptor and the torque app for android works perfectly on my 2000 N/A galant for reading fault codes and more.