2011 Nissan Altima Hybrid Stutters/shuts off at stops

[mrazndead]

2011 Nissan Altima Hybrid Stutters/shuts off at stops
59k miles and have had it for 2.5 years without issue.

lately, it's been stuttering and then shuts off at stop lights. in electric vehicle mode it drives fine. but when it shifts over to gas man it stutters and wants to shut off. i changed the 12v battery already. but i've read online that it can be a crankshaft position sensor and/or camshaft position sensor issue. and i just need to change that? does anyone know where it's located and can i change it myself? it's not throwing any codes. can it be the fuel pump? or spark plugs?

thanks

[seldomseen]

Who/where did you the car's system analyzed for codes? Your best bet is to spend $150.00 to have a good Nissan dealership properly diagnosis your car. A Nissan dealership will most likely be your best bet in dealing with problems associated with the hybrid.