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The Service Engine Soon indicator light tells the Service tech that the Pathfinder's ECM detected and Issue with the engine's management system. Your going to have to get the Pathfinder Scanned for DTC codes so you can addressed the issues that is in the ECM's history. Once the issues have been addressed, the Service engine light will reset it self or the service tech can reset it for you. The light will stay on or come back if the issues have not been repaired. Good luck and hope this helps.
this is a "check engine" light. to get the info you need you need to hook up a scanner a retrieve the codes in the vehicles memory. oncde you have codes on your screen, you will know either what questions to ask or at least where to go. glad to help with the codes once you have them.
Your vehicle’s computer system has self-testing capability. When the computer senses that there is a problem with one of the components or sensors it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and you should have the car diagnosed and repaired. If you can tell me the code I can give you possible causes.
Sounds like a problem with the power valve actuator in the intake manifold collector. I would check with a Nissan dealer first and inquire of any recalls or service bulletins. Might save ya time & money.