Because if the technician can't use the data link connector on the car to access the computer, then they have to assume the computer is defective in other ways or the system has been tampered with, wires cut, etc.
Answering "How do you fix a 1995 Chevrolet Lumina emission test fail NO x ppm reading fail?"
Is to ensure that communications can be maintained if primary systems fail.
No
Reason why computer Engineering student fail?
You will fail an emission test and worse case, the engine will fail to run if the cat gets plugged up.
It may do that but it will surely fail all emission standards. If you fail that then you can't drive it anyway.
No, a teacher cannot fail a student without providing a valid reason.
No, there is no reason why you should fail in this case.
Check engine light will probably come on and you will fail the emission tests.
EGR may not be working.
yes they but it on a scan tool and they should tell you what the problem is and what needs to be done.
Not understanding the cause.