2022 Ram 2500 - from when purchased new, had intermittent WIF false positives. Typically when it rained, but not consistently. Three times the dealer said they checked it out and everything looked fine. Each time afterwards at the next service, I would bring up the problem again because it was still a problem. Finally, two years later a extraordinarily competent technician worked it and found the problems: 1) a sensor pin that was corroded, and; 2) a short-to-ground from where the wire harness rubbed through where it went over the frame rail and contacted the under-body insulation.
The tech's write-up is below. I don't think I've ever seen such detain from an auto tech. Pat this guy on the back and give him a raise.
Inspected for water in fuel filter housings. Inspected connections at WIF sensors. Found WIF Sensor 1 sensor pin corrosion. Replaced WIF Sensor 1 and applied dielectric grease to connector. Inspected Sensor 2 and found circuit K303 shorted to ground. Traced circuit to connector XY940A and found circuit K303 grounded and rubbed through as it travels over the frame rail contacting the under-body insulation. Unplugged XY940A and inspected wiring and connector. Detached connector XY940A from the main harness freeing connector from the under-body, de-pinned k303 from connector, heat shrink wire insulation, and secured it around the main harness where the wires can no longer rub the under-body insulation.
The tech's write-up is below. I don't think I've ever seen such detain from an auto tech. Pat this guy on the back and give him a raise.
Inspected for water in fuel filter housings. Inspected connections at WIF sensors. Found WIF Sensor 1 sensor pin corrosion. Replaced WIF Sensor 1 and applied dielectric grease to connector. Inspected Sensor 2 and found circuit K303 shorted to ground. Traced circuit to connector XY940A and found circuit K303 grounded and rubbed through as it travels over the frame rail contacting the under-body insulation. Unplugged XY940A and inspected wiring and connector. Detached connector XY940A from the main harness freeing connector from the under-body, de-pinned k303 from connector, heat shrink wire insulation, and secured it around the main harness where the wires can no longer rub the under-body insulation.