How do you find engine trouble codes?

Answer:
Easiest way is with a Diagnostic Scanner connected to the OBDII port usually under the dash but easilly visible from underneath the dash and usually on the driver side. Location can vary from car to car.How about on a 1995 Oldsmobile Aurora?
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First answer by ID1135016217. Last edit by ID1135016217. Question popularity: 0 [recommend question].