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Hey everyone, my name is Danny King I am the owner of P3 Autokrafte I Dayton Ohio. Is anyone on this forum familiar with K line and L line communication on the 993? In the shop we have a 1997 Cabriolet that was brought in for a horn support. Very common problem right? During the course of the repair I tested the horn with the airbag off just to verify function. Of course this set the airbag light which I knew would happen so I plugged in the PST 2 to clear it. To my surprise I could not communicate with the airbag module upon further investigation I found I could not communicate with any modu