EGR system on ford 2000 4.6 engine

barnE

Member
Light is on and code is 401. Seems to run the same. Fluke or worse? Probably have to pay somebody. Health poor. What woujld you do? Thanks Dave
 
The egr passage under the throttle body is likely plugged. The other thing that often goes wrong is the DPFE sensor. It checks the egr flow and sometimes the hoses melt and then the sensor gets hot enough to melt also.
 

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