2003 Nissan Altima 3.5L with engine code P0345. Where exactly is it located at on the engine? And is it hard to replace??
It is near the batter (see picture below) it should take 10-15min to install it (if the car is not hot)
see the service bulletin below for more info
https://www.autocodes.com/uploads/nissan/NTB04-063.pdf
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