Kate 13, what is the part number for the camera you got from Amazon? I got mine from eBay, $70, part number BT4Z19G490B. This is the actual number printed on the camera. I notice many cameras listed with this part number but the picture shows a different number on the actual part. Not sure if any of that matters as all the cameras look identical. I'm wondering if I got one that had the same part number printed on it as in the pictures above things would be different... Scratching head... I've got an OBD blue tooth scan tool and downloaded the forscan software. I will attempt the recalibration tomorrow and see what happens.