Code p0841

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. I'm sorry to hear you're having trouble with your Altima. The P0841 code indicates an issue with the transmission fluid pressure sensor or switch, which could be related to the valve body you replaced. If the RPMs are fluctuating while driving, it could suggest the CVT isn't regulating pressure properly. This might be due to incorrect installation, a defective valve body, or a problem with the transmission control module (TCM). Double-check the valve body connections, the fluid level, and whether the system needs reprogramming after the replacement. If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!