Member takane2 gives us information on how to make a scan tool for the OBD port that emulates the under the hood diagnostic port. This is great news as through the OBD port, with the home made device you can read off your car’s true mileage. Warning: This is for 850’s and first year 70 series Volvo’s only- from ’99 the computer changed and potentially, you could do damage to the ECU or other electrical parts in your car if you do this with the wrong car.
Playing with the OBD-ii… got the mileage?
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