Two problems related to transmission solenoid have been reported for the 2009 Nissan Altima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Nissan Altima based on all problems reported for the 2009 Altima.
P0776 codes populates after 02 sensors were changed. It's the solenoid b pressure line located in the valve body. It affects the car to the point we're it's undriveable and loses power. Car will not go over 3000rpms if it does it causes the car to go into lymp mode. There's been several complaints regarding the issue and Nissan has yet to make any effort to rectify the issue. Nobody has $3000 to replace the whole transmission, when it's only a little component that needs to be replaced and not the entire tranny. Rectify the issue and stop selling lemon cars with horrible parts.
I bought the car at roughly 54k miles. Approximately around 62k, the air conditioner stopped blowing cold air. I work on residential ac units. My pressures are equalized. I bypassed the pressure switch temporarily during diagnostics to see if the pressure switch was the issue. The problem continued when bypassed. The issue is either the clutch specifically or the compressor is bad. Here recently, I have noticed a "jerking" motion when attempting to accelerate. Obviously, this will be the shift solenoid or the cvt. Cvt fluid is good. These issues have been going on with 2009 Altimas for over 8 years now. Why hasn't there been a recall? what is required to get a recall in effect? there have been multiple complaints regarding cvts, start/stop procedures, and ac problems, but not one recall concerning this has happened. Nissan refuses to help.