Some questions:
1- According my Micra k13 DIG-S manual, the sparkplugs to use are NGK DILKAR7E11HS, and they must be replaced every 60.000km (about 38000 miles).
Isn’t too ‘short’ mileage for Iridium spark plugs?
2- Where I can find the Micra k13 OBD port? Can you post a picture?
3-...