My LTFT and STFT and the sensor current on the upstream O2 sensor are all very high on Bank 1.

Ideally I'd have done a smoke test but the village garage has been really busy and when he looked at the scanner readings he suggested a new sensor was probably the solution which has always been my first thought.

I got a new Denso sensor and eventually manged to get the old bank 1 sensor out which looked quite a new Denso.

It's made no difference at all apart from my bank account and skin.

I'll have to wait for a smoke test to see if bank 1 has a leak.

Oh and I did disconnect the sensor to make sure I had the correct bank.

Bother.