One problem related to gas recirculation valve (egr valve) has been reported for the 2010 Ford Explorer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Ford Explorer based on all problems reported for the 2010 Explorer.
Check engine light came on and the code was p0106 and p0401. I discovered plastic tubing failed by breaking (disintegrating really), all in the vicinity of a part that I suspect controls those functions. The part is a harness with 4 of these plastic tubes that connect to various places. The fact that they are disintegrating indicates the wrong materials are used. Ford motor company should have this issue addressed as a recall for defective materials. I have samples of the tubing that survived.