Turbo speed high fault 0595

[Rawze]

(04-16-2018 )marek4792 Wrote:  Okay so just a run down I've been getting this fault code for awhile as I climb into higher elevation 4500 feet so I decided to watch on insite how it comes on and this is what baffled me. I watched the turbo speed go up 117***, 118***, 119***, then it stops at 120000 rpm exact before jumping up above 150000 rpm triggering the code until I back off the pedal or the engine load increases enough to drop the road speed and engine rpm. A quick talk with Unilever confirmed if the data was valid the turbo for sure wouldve self destructed by then, especially after the 181+ events or so. The only issue I have is that my exhaust manifold slip joints are leaking making me suspect an obvious mechanical fault, but watching the data on insite makes me suspect the sensor is putting out bad data?

sounds like it may have been over-boosting too. what engine, what turbo?. CM870 should only be making about 36 psi or so at 500 hp.