2008 shutdown
 

My 2008 maxima shuts down sometimes while I'm driving! It starts back after a couple of turns and runs good for a few days and does it again. Need help!! Thanks in advance!!

Any codes? The light doesn't have to be on for codes to be present.

the codes were P0725 and P0340.

A Google search.
What causes the P0725 code?

The most common problems that result in the P0725 code are a malfunctioning engine input speed sensor, and a faulty transmission output speed sensor. However, many other things can trigger the P0725 code, including:

• Corroded, damaged, or shorting wires
• Loose connectors
• Dirty or insufficient transmission fluid
• Malfunctioning engine drivability sensors
• Faulty shift solenoids
• In rare cases, a malfunctioning PCM

What are the symptoms of the P0725 code?

The P0725 code will usually be accompanied by an illuminated check engine soon warning light on the vehicle’s instrument cluster. In addition, the car may experience transmission issues, such as an inability to shift smoothly, or even to shift at all. Engine problems may be present as well, including a misfiring engine, hesitation upon acceleration, and occasional stalling. A malfunctioning speedometer and diminished fuel efficiency are common symptoms as well.

This fault would be best addressed with an oscilloscope, looking at the crank and cam position sensors.

I would check out some scannerdanner videos on YouTube that address cam/crank position sensor codes. He is the man.