A code 47 indicates that the SRS module has detected incorrect electrical resistance in the passenger side seatbelt pretensioner. The SRS module controls the airbag as well as locks the seatbelts right before a collision. Code 47 points to a problem in that circuit for the passenger seat.
The only thing that you will be able to do yourself at home is to unplug the passenger seatbelt connector and plug it back in to make sure it is seated properly. As little as 1/2 ohm of resistance change one way or the other is enough to set this code-so diangosis has to be done with factory level service equipment. Independent repair shops may or may not have the equipment so you may have to take it to the dealer for service. Working on airbag circuits is very dangerous and has to be done by a trained technician.
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