As soon as I remove the ‘0’, #doorOpen OID both the inventory and the check are working!
OMD[sitename]:~$ cmk -II RZp
discover
[['1', '1', '1', '1', '1', '1', '1', '1', '28.05', '35.58']]
OMD[sitename]:~$ cmk RZp
check
[snmp] Success, execution time 2.1 sec | execution_time=2.150 user_time=0.020 system_time=0.000 children_user_time=0.000 children_system_time=0.000 cmk_time_snmp=2.130 cmk_time_agent=0.000
So is this a misconfiguration on my side? The script tweaked by you is working with the doorOpen-OID?