Regarding the requirement to install an on-board diagnostic (OBD) stage II system, which ensures the monitoring and reporting on the emission control system failures and degradation, the Commission concluded on the basis of the effect study that there are technical limitations with respect to catalyst monitoring for certain vehicles and that further development is required to ensure its correct implementation.
Maidir leis an gceanglas córas diagnóiseach ar bord (DAB) céim II a shuiteáil lena n-áirithítear go ndéantar faireachán agus tuairisciú ar chlistí agus meath sa chóras rialaithe astaíochta, tháinig an Coimisiún ar an gconclúid ar bhonn an staidéir ar an tionchar go bhfuil teorainneacha teicniúla i ndáil le faireachán a dhéanamh ar an gcatalaíoch i gcás feithiclí áirithe agus gur gá forbairt bhreise a dhéanamh chun an cur chun feidhme ceart a áirithiú.