forddieseldoctor Posted December 25, 2016 Share Posted December 25, 2016 I thought they were a flow sensor to make sure it's connected and that there was supposed to be a small amount of variation when it was running. Quote Link to comment Share on other sites More sharing options...
2006 Posted December 25, 2016 Share Posted December 25, 2016 This code and the crankcase connector sensor have nothing to do with pressure and the signal value should never vary. The sensor is an anti-tampering switch that indicates the ventilation hose is connected. Nothing more. The 3.7V reading is what the PCM wants to see to verify that the tube is connected. Any more or less indicates a disconnected tube, wiring concern or a faulty sensor. How would it know if its disconnected? Part of the pinpoint test says: Inspect the turbocharger inlet surface for debris, or dirt that could cause an incorrect connection. So maybe there is contact inside the hose where it connects onto the lower intake metal fitting? Or maybe a magnetic switch as you said... Quote Link to comment Share on other sites More sharing options...
Brad Clayton Posted December 25, 2016 Share Posted December 25, 2016 It is a hall effect sensor (used for position detection). You can disconnect it and stick any thing that is ferrous in the sensor ring that is close to the same diameter and it will read as if it is connected to the lower intake. The whole thing is a waste of time, money and energy and has been done away with on the '17 model. Quote Link to comment Share on other sites More sharing options...
forddieseldoctor Posted December 26, 2016 Share Posted December 26, 2016 It is a hall effect sensor (used for position detection). You can disconnect it and stick any thing that is ferrous in the sensor ring that is close to the same diameter and it will read as if it is connected to the lower intake. The whole thing is a waste of time, money and energy and has been done away with on the '17 model. Ah... That makes sense. But I do agree it is a waste if that is all it does. 1 Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted December 29, 2016 Share Posted December 29, 2016 Had another one of these yesterday annoying the crap out of a food customer with an intermittent check engine light. I agree that it was pointless. I don't think there are any 6.7L owners doing a CCV mod even with RGR and aftertreatment deletes. Quote Link to comment Share on other sites More sharing options...
cbriggs Posted December 30, 2016 Share Posted December 30, 2016 I have changed atleast 6 of these since the weather got cold. Quote Link to comment Share on other sites More sharing options...
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