Nthawi zambiri, malingaliro a uinjiniya a dongosolo loyang'anira mayankho amafuta amatsimikizira kuti sensa ya okosijeni ili pafupi ndi chipinda choyaka moto, ndipo kuwongolera kuwongolera kwamafuta kumakwera, komwe kumatsimikiziridwa ndi mawonekedwe a mpweya wotulutsa mpweya, monga kuthamanga kwa mpweya, kutalika kwa njira (gasi ndi yotsalira kwambiri nthawi yomweyo) ndi nthawi yoyankha ya sensa, ndi zina zotero. Opanga ambiri amaika sensa ya okosijeni pansi pamtundu uliwonse wotulutsa mpweya wa silinda iliyonse, kuti athe kudziwa kuti silinda yomwe ili ndi vuto, yomwe Amachotsa kuthekera kwa vuto la matenda, ndipo nthawi zambiri amachepetsa nthawi yozindikira matendawo pochotsa pafupifupi theka la masilinda omwe angakhale ovuta.Chosinthira chabwinobwino chokhala ndi sensa yapawiri ya okosijeni komanso makina owongolera mayankho amafuta omwe nthawi zambiri amawongolera kagawidwe ka mafuta amatha kutsimikizira kusinthika kotetezeka kwa zida zotayira zowononga kukhala zosavulaza za carbon oxide ndi nthunzi wamadzi.Komabe, chosinthira chothandizira chidzawonongeka chifukwa cha kutenthedwa (chifukwa cha kusayatsa koyipa, ndi zina), zomwe zingapangitse kuchepetsedwa kwa chothandizira pamwamba ndi kutsika kwa chitsulo cha orifice, zomwe zidzawonongeratu chosinthira chothandizira.

Pamene chothandizira chikulephera, tikhoza kudziwa kuti amisiri ndi ofunika kwambiri pakukonzekera chilengedwe ndi makina otulutsa mpweya.

Mawonekedwe a OBD-II ozindikira matenda amapangitsa dongosolo loyang'anira pa bolodi ndi OBD-II kuyang'anira chilengedwe komanso chothandizira kudziwa molondola kumatanthawuza molingana ndi mawonekedwe a okosijeni azinthu zabwino kapena zoyipa.Pogwira ntchito yokhazikika, kusinthasintha kwa chizindikiro cha sensa yabwino ya okosijeni (yotentha) kuseri kwa chothandizira kuyenera kukhala kochepa kwambiri kusiyana ndi kachipangizo kamene kamakhala kutsogolo kwa chothandizira, chifukwa chothandizira chomwe chimagwiritsidwa ntchito nthawi zonse chimadya mphamvu ya okosijeni potembenuza ma hydrocarboni ndi carbon monoxide, amachepetsa kusinthasintha kwa chizindikiro cha post-oxygen sensor.