This is out of the OVF30 drive book. This test is also done every 5 seconds. I have a handful of cars that run just fine with this fault logged. I hope this helps.
F58 E2 checksum err 1
On power-up and after each EEPROM parameter change the 80186EC Host performs a
checksum test on its EEPROM. If the test fails, this fault is declared.
