1) checked level > deemed to be good
2) check if issue disappears when shifting manually. If this is the case, then the cause is likely in the electrical side of things.
3) If so, check fuse in TCM, resistance in solenoids, etc.
I see more often mentioned a faulty NSS displays more issues relating to not starting in Park or Neutral, or no reverse lights, rather then shifting problems.
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97 XJ 4.0 Sport (Nov)
Chrysler 8.25"
189.000 km
Stop calling your car a "she". It's a car.
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