P0303 2002 Nissan Altima Sedan -

Question

2002.6 Nissan Ultima 6 liter, 3.5
I'm getting an PO1800 reading as well as a PO303, engine misfiring, running rough, engine light flashes and stays on at a steady state intermittently even in a 5 minute drive

Answer 1

Hi there,

P1800 indicates an issue with the variable intake air system. Here is some info for you.

P1800 NISSAN - Variable Intake Air System Control Solenoid Valve Circuit

Read more: https://www.autocodes.com/p1800_nissan.html

P0303 indicates a misfire on cylinder 3. Here is a list of possible causes.

P0303 NISSAN - Number 3 Cylinder Misfire Detected

Read more: https://www.autocodes.com/p0303_nissan.html