Hi, i am christoph from cologne/Germany. I´m in holiday in the mediteranean sea in france with my seadoo GTI 155HP from 2007. Up to now we had a good time with jet but now appeard a fault code 1520 / OIL with loong beep. I changed the oi pressure sensor and the problem was away for two hours ride. Than it appeard again. I decided to renew the oil pressor regulator in the PTO housing. The problem is still there. Perhaps there is someboddy in the community with the same problem. Thanks for hellp!! christoph