UK952

My car has recently stopped going it to closed loop, It runs fine (maybe slight stumbling when cold), but the narrow band has stopped 'scrolling' at part throttle. TPS still clicks a/f at WOT looks the same, any ideas?
Thanks in advance,
Toy

Tomas L

Check the lambda sensor.

UK952

Thanks, its actually come back I checked the connectors on AFM and TPS (which looked fine) and its back to normal,
Tony