I have no clue.

My PIC is either ON or OFF, I have no Sleep mode.

https://ww1.microchip.com/downloads/...Doc/31026a.pdf

During normal operation, a WDT time-out generates a device RESET. If the device is in SLEEP mode, a WDT time-out causes the device to wake-up and continue with normal operation, this is known as a WDT wake-up. The WDT can be permanently disabled by clearing the WDTE configuration bit.