Camshaft Position Sensor

Hello:
Noob asking a question here.

I have a miata and I got that camshaft sensor no signal OBD II code.

However, I just bought this car and the dealers messed with the cam sensor plug before.

I am wondering if the conenction is ok or not.

Anyone know if the engine can still run constantly without the sensor? or would it stall?

Thanks

the car should still run with the sensor unplugged but i don't think that it will rev up with this sensor unplugged.