Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
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Appendix. UEC list
Following is the list of Unit Error Codes and associated descriptions. The Unit Error Codes are returned by the target
in sense data bytes 20-21.
The list of Unit Error Codes and descriptions does not have a direct correlation to the error descriptions and Sense
Key/Code/Qualifier descriptions in Section 20 "Additional information". These codes are used internally by HGST
and may change without notice.
How to find a specific UEC
The second hex digit indicates the grouping, e.g. interface, media, servo, etc. types of errors. The table is sorted
without regard to the first hex digit; instead, sorting is by the least significant three hex digits.
Table 325 Unit Error Codes
UEC Description
0000
No Error
F101
BATS error: Reserved Area - Invalid request
F102
BATS error: Reserved Area - Broken
F103
BATS error: Reserved Area - Invalid version
F104
BATS error: Reserved Area - Invalid checksum
F105
BATS error: Reserved Area - Invalid eyecatcher
F106
BATS error: Reserved Area - Invalid main header checksum
F107
BATS error: Reserved Area - Invalid read length
F108
BATS error: Reserved Area - Address boundary error
1109
BATS error: Reserved Area - Error reading first copy
F10D
BATS error: Reserved Area - Write fix hard error
F111
BATS error: RAM code load error
F112
BATS error: RAM code check
F118
BATS#2 error: Seek test error
F119
BATS#2 error: Read/write test error
F11B
BATS#2 error: CRC test error
F11C
BATS#2 error: XOR test error
F11D
BATS error: Incorrect Disk Code
F120
BATS error: Code Compatibility Failure