Hello @EddiePark,
Please specify the RTD revision.
Does the fault occur during or after the flash operation?
If you are erasing the sector starting at 0x00400000, where is the application code located?
As discussed here:
https://community.nxp.com/t5/S32K/S32K344-C40-IP-Hardware-Fault-Problem/td-p/1697432
Place this function to SRAM too:
C40_Ip_MainInterfaceHVJobStatus()
Check the .map file to confirm the functions are in SRAM.
Regards,
Daniel