Thread: 2004 6.0l turbo
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Old 01-16-2014, 02:04 AM
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Twiceblown351 Twiceblown351 is offline
 
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P0046 is about the wiring to the vgt solenoid. An in a open wire or a short from to turbo to the PCM.
But knowing 6.0 Ive seen this and come to find out it was the EGR valve stuck open. And you saying your cleaning the turbo a lot i would look at it. If its not that I would look at the vgt solenoid look at it and see if its not bad.

And if you pull the EGR valve out and its guley in there better put a PSI gauge on you coolant system and go for a ride to test it and make sure it doesn't go
over 16PSI if it does Its time to look at the EGR cooler and head gaskets.
Good luck
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