[ShocknAwe]

Before you spend money-

I've found this often to be a symptom of a battery that isn't charged up enough or if my battery discharges too far when sitting if I forget to put a trickle charger on before leaving town. I have a Bluetooth dongle and WIFI OBD that have parasitic draw. You could have parasitic draw or a weak alternator.

I do a full calibration and it goes away.

Food for thought!