One problem related to mass air flow sensor has been reported for the 2005 Nissan Titan. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Nissan Titan based on all problems reported for the 2005 Titan.
While driving on a highway at approximately 55 mph, my engine stalled. I lost all engine power to my truck, with no error codes, no check engine light. I had to place my truck in neutral while at speed in traffic in the left lane and coast to a safe location on the right shoulder. During this time, I had no power steering or power brakes. After I safely stopped on the shoulder, I tried to restart my engine. My engine would not start. Approximately one month prior to this incident, my truck had intermittently stalled while stopped, with an error code that pointed to an ineffective catalytic converter. I had my mass air flow sensor replaced, my ecm relay replaced, and my catalytic converter replaced, at a cost of ~ $5000 total. I am now told the the intelligent power distribution module is likely the culprit for all of these problems, which will cost me another $700 to replace. In researching previous recalls, there is an existing recall for the ecm relay, but not the ipdm module. It appears in other Titan forums that several other people have suffered from the same issue.