Plug connector and plug connector assembly

A plug connector assembly, comprising:

• a plug connector for interlocking with a mating plug connector along an insertion direction, the plug connector including:
• a plug connector housing configured to accommodate at least one contact element,
• a lever assembly that is swivelable between a first position and a second position about an axis extending in the Y-direction,
• a cover situated at the plug connector housing;
• a connector position assurance (CPA) that includes at least one blocking element,
• wherein:
• in the second position, the lever assembly being releasably latched to a latching structure,
• the CPA is situated at the cover,
• the CPA is displaceable between an unblocking position and a blocking position along a displacement direction,
• the CPA includes a blocking element which, in the blocking position of the CPA, prevents a displacement of the latching structure for releasing the latch between the lever assembly and the latching structure,
• the blocking element and the cover are configured to cooperate with each other in such a way that a displacement of the CPA from the unblocking position into the blocking position is a function of a position of the lever assembly, and
• in the first position of the lever assembly, the CPA not being movable from the unblocking position into the blocking position,
• the lever assembly includes an unlocking element,
• in the second position of the lever assembly, the unlocking element moving the blocking element radially outward transversely to the displacement direction along the axis extending in the Y-direction, so that the CPA is movable into the blocking position;
• and
• the mating plug connector, the mating plug connector including a mating plug connector housing that is configured to accommodate at least one countercontact element.