My mobile connector is giving a 5 blink error code when charging for both the NEMA 5-15 120V plug (tried several) and the NEMA 14-50 240V 50 A plugs. To be honest, I did not concern myself with it when at first using the 120 V connector. It would read charging at 3 MPH at 8 amps. It was when I had the opportunity to use the 14-50 when I noticed it warned that charging speed was reduced (7 MPH at 8 amps with the + grayed out.) That was when I took note of the error code. I tried all the recommended connect - disconnect variations, even retried the 120 v connector. I don't think it is the "on board charger" since I often use public charging with no problems. I am suspecting a faulty mobile connector. Anyone else have this issue? I will contact Tesla about this next week.