my check light keeps coming on and stays on. I went for an inspection, no luck. on 2000 Ford Ranger

i went for an inspecction and the mechanic hook the engine up to the computer, and was able to shut the light off. He told me to drive it 100 miles and it would go off. Well it came on after 85 miles. Isa cannot get a sticker, What should I do? I have an rejection sticker now.

Asked by for the 2000 Ford Ranger
1 answer
What codes do you have?
What size engine or the 8th digit on your VIN number.
8th Digit will be a letter(C,U,V or X)

In MA you have 60 days to fix problem.