Help code p1800

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
Game1234
Posts: 2
Joined: Sat Jul 10, 2021 7:58 pm
Car: '06 Infiniti M45

Help code p1800

Postby Game1234 » Sun Jul 11, 2021 8:35 pm

I have a 2006 m45 that’s been giving me issues.. it’s starting to turn off while am driving and it turns back on but starts to misfire and loss of power. I’ve changed the camshaft sensor, crankshaft sensor, and the 2 vti sensors. I keep getting code 1800 I can’t seem to find the part for that code if any one can help me or point me in the right direction I would appreciate it


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VStar650CL
Posts: 2288
Joined: Thu Nov 12, 2020 1:25 pm
Car: 2013 Nissan Altima 2.5 SL
2004 Nissan Altima 2.5 S

Re: Help code p1800

Postby VStar650CL » Sun Jul 11, 2021 8:47 pm

P1800 is the VIAS (power valve) solenoid. It's an electrical code, the solenoid coil (or wiring) is either open or short. I think on an M it's right near the coolant outlet on the right front corner of the engine. It shouldn't cause any stalling or major drivability issues. That sounds more like a fuel or mass airflow problem if you aren't getting other codes.

Costee
Posts: 310
Joined: Wed Oct 24, 2012 5:14 pm
Car: 2006 M45 Sport
2012 Murano SL
Location: Lagos, Nigeria

Re: Help code p1800

Postby Costee » Tue Jul 13, 2021 2:38 pm

I think I've read cases with drivability issues. I had the code a while back and I didn't wait for the outcome before I had the solenoid replaced. It's on the driver's side just behind the intake. The part number is 14956-38U10 (new:14956-38U1A).
Check page 824 of the EC section of the FSM

Game1234
Posts: 2
Joined: Sat Jul 10, 2021 7:58 pm
Car: '06 Infiniti M45

Re: Help code p1800

Postby Game1234 » Wed Jul 14, 2021 3:14 am

Yeah I found it. I swapped out the solenoid and it fixed my problem Appreciate the help


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