Still - things have changed so you should check it with a shop gauge. Could be an issue with the sending unit.
And the FSM and Owners Manual both state that seemingly zero pressure at idle on the "trim package" is "normal" and expected operation.
The General Rule for oil pressure is 10 psi per 1000 RPM. Of course we generally like to see it higher than that, but that's the generally accepted number for operation without damage.
GD