An electrical connector assembly comprising: a connector housing; and a connector position assurance member arranged movable on the connector housing between a first and a second position, wherein the CPA member comprises a latching member (41, 42) that engages a locking portion on the connector housing to fix the CPA member in the first position on the housing, wherein the latching member (41, 42) is a latching arm that protrudes from the CPA member wherein the latching member (41, 42) is adapted to be released from said locking portion by a corresponding counter connector upon mating of the connector housing with said corresponding counter connector, wherein the latching arm (41, 42) protrudes in a mating direction of the connector housing and wherein the latching arm (41, 42) comprises an inclined release portion adapted to come into contact with a portion of the counter connector upon mating of the connector housing with a corresponding counter connector and wherein the connector housing comprises at least one sliding groove and the CPA member comprises a corresponding sliding portion arranged therein to allow a controlled movement of the CPA from the first to the second position, wherein the corresponding sliding portion extends in the mating direction of the connector housing characterized in that the electrical connector assembly comprises: a rotatable lever mounted on the connector housing to facilitate the mating process of the connector housing with the corresponding counter connector, said lever being movable from a preliminary mated position to a fully mated position wherein a locking latch provided on the connector housing is latched behind a common web of the lever; wherein a blocking portion of the CPA member is arranged underneath a free flexible end of the locking latch when the CPA member is in the second position; wherein the CPA member blocks a movement of the lever when in the second position and allows movement of the lever when in the first position. a connector housing; and a connector position assurance member arranged movable on the connector housing between a first and a second position, wherein the CPA member comprises a latching member (41, 42) that engages a locking portion on the connector housing to fix the CPA member in the first position on the housing, wherein the latching member (41, 42) is a latching arm that protrudes from the CPA member wherein the latching member (41, 42) is adapted to be released from said locking portion by a corresponding counter connector upon mating of the connector housing with said corresponding counter connector, wherein the latching arm (41, 42) protrudes in a mating direction of the connector housing and wherein the latching arm (41, 42) comprises an inclined release portion adapted to come into contact with a portion of the counter connector upon mating of the connector housing with a corresponding counter connector and wherein the connector housing comprises at least one sliding groove and the CPA member comprises a corresponding sliding portion arranged therein to allow a controlled movement of the CPA from the first to the second position, wherein the corresponding sliding portion extends in the mating direction of the connector housing characterized in that the electrical connector assembly comprises: a rotatable lever mounted on the connector housing to facilitate the mating process of the connector housing with the corresponding counter connector, said lever being movable from a preliminary mated position to a fully mated position wherein a locking latch provided on the connector housing is latched behind a common web of the lever; wherein a blocking portion of the CPA member is arranged underneath a free flexible end of the locking latch when the CPA member is in the second position; wherein the CPA member blocks a movement of the lever when in the second position and allows movement of the lever when in the first position. a rotatable lever mounted on the connector housing to facilitate the mating process of the connector housing with the corresponding counter connector, said lever being movable from a preliminary mated position to a fully mated position wherein a locking latch provided on the connector housing is latched behind a common web of the lever; wherein a blocking portion of the CPA member is arranged underneath a free flexible end of the locking latch when the CPA member is in the second position; wherein the CPA member blocks a movement of the lever when in the second position and allows movement of the lever when in the first position.