No reverse gear engagement possible cause and fix? All forward gears work fine. on 2006 Chrysler 300

Replaced solenoid, input/output sensors new fluid and filter and also range sensor. Valve body checked for any possible clogged channels but no restrictions found. Main housing has no grinding or abnormal sounds.

Asked by for the 2006 Chrysler 300
Broken low reverse band. Get trans. shop to check it.
Ok. Thanks for quick response.