On January 30, 2012, the US Justice Department announced after two years of investigation that it had discovered part of a massive price fixing scheme in which Denso and Yazaki played a significant role.
Setelah dua tahun penyelidikan, pada tanggal 30 Juni 2012, Departemen Kehakiman AS mengumumkan bahwa mereka telah menemukan sebagian dari skema penetapan harga yang cukup besar di mana Denso dan Yazaki memainkan peran penting.