You should see the strip in P3Dv5x but it was not built with a ICAO. Here is the info and map (LINK).
Moh Creek (Refreshed V2.0-06.15.2019)
By Mike Broemme - Submitted by Dieter Linde
Start: N50 31.5927 ... W125 3.3274 ... Mag: 116.8 ... Land ... R180A
Moh Creek is located in the Strathcona Regional District about 35 NM north of Campbell River/CYBL, British Columbia. You have to plan a visual approach on a dirt airstrip curved like a banana. There are no nav aids available. The airfield is basically closed but accessible on request for smal land- and seaplanes. There's a mooring on the waterfront for tying your waterplane. At the airfield you don't get any aircraft maintenance or fuel. You must bring your own equipment and food.
The Moh Creek area is famous for fishing, hunting and hiking. Cabins can be rented for staying over night. Some cabins are available directly at the airfield. There are 3 other hidden cozy cabins at the end of the forest trails, transport service by car on request. When you follow the footpath downhill to the river you'll find a mixed sauna to relax and recover.
The best way to plan your tour is starting from Campbell River where you might stock up your fuel, food and equipment.
https://return.mistymoorings.com/s_scenery_rtmm/zipfiles/moh_creek/Moh%20Creek%20Flight%20Plan.jpg