Weird Problem

P

PietroThePilot

Guest
Ok, is really strange but...
Some times my car is working perfect, and sometimes when i turn on the ignition the fans run even if the engine is cold and the check engine light is illuminated.
The strange things is that when i have this problem the care don't make me any foult code. Wiring the 2 hole in the fuse box nothing happen, when the check engine is off it work and give me 55 (all ok)
Why??? what could be???
At Nissan the said that are unable to understand.
Any suggestion??
Thanks
 
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