DRV8889-Q1: Unexpected reports open

Tool/software:

Hi team,

       I found the OL bit was accidentally set in Fault status register (0X00). It will be clear when the system reboot without hardware changes.

     Software background:

     1. tol = 0 in software.

    2. TRQ_DAC is dynamic. the max value = 15 , the min value = 10

       1. What are the possible OL bit  be set except current less than 30mA?

       2. Whether TRQ_DAC will affect OL judgment?

       3.The exception only occurs on the vehicle, and the same fault is not repeated separately. Is it related to the vehicle EMC environment?

Thanks

zhenghao