0004 line pressure solenoid

Question

I have a nissan micra 1.3i year 1999 automatic transmission. When I start the car and go for approx. 100-200 meters light N-CVT goes on. I checked the problem to a person with computer and adapter for Nissan because Nissan doesn't have yet a representative office in Albania yet.

the problem reported is "0004 line pres solenoid"

we checked the oil of transmission and it looks very clear and in right level. It was changed before approx before 14000 km.

Please what is the remedy for this case.

Thank you