One problem related to power steering light on has been reported for the 2006 Ford F-250. The most recently reported issues are listed below.
When driving highway speeds I never know when the front end is going to violently shake so bad that I can't see out the rear view mirrors to even know who is around me when my truck is completely out of control. I can't believe someone has not died yet! it's not if, but when. A joint in the road, pot hole, or just a pavement irregularity causes it, but I never know when. I've asked service and sales techs at both phil long Ford/littleton, CO and lakewood Ford/lakewood, CO and received the same line of crap, that I'm the first person who ever mentioned it. Check my tire pressure is what I'm told. All I had to do was google the problem and I found a seemingly endless list of complaints of the exact same problem. This site was already aware of the problem because when I went to select the "failed components", steering was already highlighted. This is a $50,000 truck I'm afraid to do the speed limit in. Loaded or unloaded, pulling a trailer or not, the problem can present itself. How many complaints or deaths does it take before Ford is held responsible for this defect?.