One problem related to brake sensor has been reported for the 2006 Nissan Frontier. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Nissan Frontier based on all problems reported for the 2006 Frontier.
Air bag front sensor failure at 38000 miles, failure of fuel system evaporation valve at 38500 miles. Failure of rear differential seal at 42,000 miles, failure of rear axle bearing seals, gear oil to leaking on parking brake shoes causing slippage at 48,500. Truck has 49,000 as of 3/24/2012.