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1997 Sentra with 4 open monitors that will not update. Have driven hundreds of miles trying many different drive cycles with no luck getting these monitors to update themselves. Dealer was not much help, just suggested changing ECM. Did swap ECM for one from junkyard, but that did not seem to have any effect.
There must be some common input these monitors share that is not allowing them to update. I misplaced my list of which monitors are open; I will get codes read again and will add to the post ASAP. I cannot get the car to pass state inspection with more than two open monitors. Car starts, runs, and drives fine. Shows no codes, only the 4 open monitors.
Help will be greatly appreciated. Thanks in advance for assistance. J
 

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2018 Nissan Pathfinder SL
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download the free factory service manual (FSM) at phatg20.net for your year car.
This will have wiring diagrams that will help you find out what/ where these are and where the readings are coming from. Might be a simple as a dirty connector or fuse ?
 
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