Took my 996 turbo out today for a quick spin to top battery up & give the engine a warm up, on the way back I overtook a few cars at a good speed, turbo was spooling then I felt some loss of power abs psm lights came on and check engine light. Drove back home slowly and looked under car for anything obvious and found lower left hand hose had come off. I put it back on and tightened it up and car started and ran smooth again but engine check light is still coming on, psm and abs have gone off!
What would cause the hose to blow off and I'm still worried about check engine light saying drive to workshop. Any advice guys?

 

psi is the cause, and be thankful and you just need some form of scanner or a durametric to clear the code(s) yourself. that will also tell you definitively that that was indeed the only issue causing the cels.

since i fix VERY little on my car but am standing there for most any/all of it, a $40 obd reader that allows me to ascertain/clear codes is more than sufficient and might well be for you as well. it would help you to clear the cels that remain now, even though you may have isolated/repaired the issue. boost hoses are known to pop and the c clips can get funky losing some of their power of retention. i know that has happened to me as i age as well lol. gl with it.

 

This is why the hose came off - OEM hoses are not very good!