what is a p1800 on a 2002 nissan altima?

Question

what causes a p1800 to come on? coulld i replace this piece on my own or do i need to take my car to the dealership and them fix the problem?

Answer 1

P1800 = VIAS Control Solenoid Valve Circuit = https://www.autocodes.com/p1800_nissan.html

Possible Causes:

- VIAS control solenoid valve circuit harness is open or shorted
- VIAS control solenoid valve circuit poor electrical connection
- Faulty VIAS control solenoid valve