I have the same problem :-(
I own a Mustang 2017 GT V8 Europe non PP (non Performance Pack).
I installed myself a double gauges on the middle of the dashpanel (Oil Pressure & Vacuum) as a PP-model. Once the wiring is completed (from OEM APIM Sync), Vaccum gauge is alive but not the Oil...
But now, after every engine start, the car has the 'low oil pressure' light come on. I understand well, the pressure information is now used by the gauge and the ECU dummy 'switch' receive a pressure on null.
How can I disable this warning message ?
A possible solution : Turned off DTC P0522...
HP Tuners - VCM Editor.
I own a Mustang 2017 GT V8 Europe non PP (non Performance Pack).
I installed a double gauges on the middle of the dashpanel (Oil Pressure & Vacuum) as a PP-model. Once the wiring is completed (from OEM APIM Sync), Vaccum gauge is alive but not the Oil Pressure gauge...