Nissan P155b-00 _best_
Technicians inspect the negative terminal for corrosion (white/green powder buildup) and check that the sensor ring is tight and properly seated.
Using a scanner (like Consult-III plus or a high-end aftermarket tool), the technician looks at the live data from the IBS. nissan p155b-00
: Active Grille Shutter "A" Performance/Stuck Off. Symptoms : Check Engine Light (CEL) illuminated. Slight decrease in fuel economy. nissan p155b-00