Is this the end of my Volvo 850's Transmission I replaced the PNP switch yet there are no codes displayed and the car is in neutral no matter what gear the selector is in. Is this an electrical fault?

If your Volvo 850 is stuck in neutral regardless of the gear selected and you've already replaced the PNP switch with no error codes displayed, it could indicate an electrical fault elsewhere in the transmission control system. Possible issues might include a faulty transmission control module (TCM), wiring problems, or issues with the transmission solenoids. It's advisable to check the wiring for any signs of damage or corrosion and consider having the TCM diagnosed by a professional to pinpoint the issue.