One problem related to steering failed has been reported for the 2006 Nissan Xterra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Nissan Xterra based on all problems reported for the 2006 Xterra.
The steering column bearing failed in a 2006 Xterra, causing binding in the steering wheel and causing the steering wheel to become wobbly. The service department at the local Nissan dealer recognized and identified the problem right away from my description, suggesting the problem is not rare.