Wiring problems of the 2017 Nissan Titan

Check engine light came on. Had code checked at closest auto parts store, it was an evap code. Light went out, but took it to dealer to be checked. Nothing could be done because light was off. Other sensor lights came on. . Parking and fuel cap, took back to dealer, gas cap and o ring changed. Dealer said not to worry if lights and sensor warnings came on, that truck was safe to drive, and it was suggested I take pictures each time one came on. A couple days later the engine light and sensor warnings kept coming on. Took it back to dealer, said it was a wiring harness from engine to driver's door. 2-3 weeks later was told the wiring harness was on national back order, which tells me a lot of Titans have had this issue and there have been no recalls. The vehicle was sometimes stationary and sometimes going down the road or highway. . No rhyme or reason for timing of issue.