Test postponed so had the car back today.Checked the first lambda and it doesnt seem to be switching, it seems to stay at about 0.94volts,and the downstraem sensor seems to stay at 0.28volts. Scoped air-mass meter today and readings seem to be good.There is another code appearing also (but i dont think it has a bearing on emmissions),it is got to do with shutting down auxilary electrics.Cant recall that code at moment ,i checked the charging and it seems to be ok 13.8v so didnt linger on that fault to long.Checked the small breather pipe under the airfilter which is common fault and it was nearly perished so changed it.Still no change.