The Iranians were in prolific form in the first round, scoring an incredible 22 times in three matches as they advanced as runners-up to Jordan in Group B.
But all they could muster in Sunday's clash at the Thong Nhat Stadium was solitary 59th minute Soghara Farmani strike, which proved to be crucial as it earned the Iranians a share of the spoils after Ziyodahon Tulanbaeva had put Uzbekistan 1-0 up on the half-hour mark.
The point leaves the two teams trailing early leaders Thailand, who scored twice in second-half stoppage-time to defeat Jordan 3-0 in the opening Group A match earlier in Sunday.
Eight teams have been divided into two groups of four for the second round of qualifiers with the top two sides playing off against each other for a place in the finals of the 2013 AFC U-19 Women's Championship.