On-Board Diagnostic Test Standards

Section 240 Section 240.192  On-Board Diagnostic Test Standards Vehicles subject to on-board diagnostic testing shall fail the on-board diagnostic test if one of the following occurs: a)         the vehicle connector is missing, has been tampered with, or is otherwise inoperable; or b)         the malfunction indicator light is commanded to be illuminated and it is not visually illuminated according to visual inspection; or c)         the malfunction indicator light is commanded to be illuminated for any on-board diagnostic trouble codes; or d)         the malfunction indicator light (MIL) does not illuminate at all when the vehicle is in the key-on/engine-off condition.