Hi Kevin, yes, so have I come across this before, which could cause the AMM to read a lower value than consumed and therefore start the whole STFT adaptation process.

Hi Glyn,I read the figures the same way, immediately after the re-set the O2 reading are too high, which if scoped at the same time the O2 sensor output would read a low voltage(if its a zinconia sensor)

And the ECU starts the ball rolling to correct the "error" by upping the fueling until it(the ECU) reaches its upper limit.

And on comes the MIL.

I think we all agree why the ECU is putting the MIL on, we now have to think of all the things that may cause the symptoms that we have.

Things like fuel pressure/flow, and air leaks come to mind straight away, as well as other numerous things such as, AMM outputs and manifold Kpa readings/valve timing etc.

Regards Mark