Genie scissor fault code 18
Hi, your machine has an issue with the pothole limit switches, wiring or ecm.
There are two pothole limit switches which are activated when the pothole guards are deployed. Check wether both switch a being made when lowered and released when the platform is raised.
Often if one of your gas struts bevome weak it can result in one of the switches not being fully pressed. With the platform raised you should be able to physically press each switch. If the switch looks in good condition and you can feel the switch opening and closing the contacts I would check the condition of the cables and connectors where they joint back into the harness.
If you don’t find the fault at this point you would need to check the limit switch are working correctly with a multi meter. And then check continuity or voltage back to B10 input on the ECM.
Please let me know how you get on??