Appendix B. Host Controller Interface Reasons

Table B-1. The list of HCI error reasons.

 

REASON

DESCRIPTION

1

0x01

Unknown HCI Command

2

0x02

No Connection

3

0x03

Hardware Failure

4

0x04

Page Timeout

5

0x05

Authentication Failure

6

0x06

Key Missing

7

0x07

Memory Full

8

0x08

Connection Timeout

9

0x09

Max Number Of Connections

10

0x0A

Max Number Of SCO Connections To A Device

11

0x0B

ACL connection already exists

12

0x0C

Command Disallowed

13

0x0D

Host Rejected due to limited resources

14

0x0E

Host Rejected due to security reasons

15

0x0F

Host Rejected due to remote device being only a personal device

16

0x10

Host Timeout

17

0x11

Unsupported Feature or Parameter Value

18

0x12

Invalid HCI Command Parameters

19

0x13

Other End Terminated Connection: User Ended Connection

20

0x14

Other End Terminated Connection: Low Resources

21

0x15

Other End Terminated Connection: About to Power Off

22

0x16

Connection Terminated by Local Host

23

0x17

Repeated Attempts

24

0x18

Pairing Not Allowed

25

0x19

Unknown LMP PDU

26

0x1A

Unsupported Remote Feature

27

0x1B

SCO Offset Rejected

28

0x1C

SCO Interval Rejected

29

0x1D

SCO Air Mode Rejected

30

0x1E

Invalid LMP Parameters

31

0x1F

Unspecified Error

32

0x20

Unsupported LMP Parameter Value

33

0x21

Role Change Not Allowed

34

0x22

LMP Response Timeout

35

0x23

LMP Error Transaction Collision

36

0x24

LMP PDU Not Allowed

37

0x25

Encryption Mode Not Acceptable

38

0x26

Unit Key Used

39

0x27

QoS is Not Supported

40

0x28

Instant Passed

41

0x29

Pairing with Unit Key Not Supported

42

0x2A-0xFF

Reserved for Future Use

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