| 0x0103 | Timeout |
| 0x4E01 | Unknown HCI command |
| 0x4E02 | Unknown Connection Identifier |
| 0x4E03 | Hardware failure |
| 0x4E04 | Page timeout |
| 0x4E05 | Authentication failure |
| 0x4E06 | Pin missing |
| 0x4E07 | Memory capacity exceeded |
| 0x4E08 | Connection timeout |
| 0x4E09 | Connection limit exceeded |
| 0x4E0A | SCO limit exceeded |
| 0x4E0B | ACL Connection already exists |
| 0x4E0C | Command disallowed |
| 0x4E0D | Connection rejected due to limited resources |
| 0x4E0E | Connection rejected due to security reasons |
| 0x4E0F | Connection rejected for BD address |
| 0x4E10 | Connection accept timeout |
| 0x4E11 | Unsupported feature or parameter |
| 0x4E12 | Invalid HCI command parameter |
| 0x4E13 | Remote user terminated connection |
| 0x4E14 | Remote device terminated connection due to low resources |
| 0x4E15 | Remote device terminated connection due to power off |
| 0x4E16 | Local device terminated connection |
| 0x4E17 | Repeated attempts |
| 0x4E18 | Pairing not allowed |
| 0x4E19 | Unknown LMP PDU |
| 0x4E1A | Unsupported remote feature |
| 0x4E1B | SCO offset rejected |
| 0x4E1C | SCO interval rejected |
| 0x4E1D | SCO Air mode rejected |
| 0x4E1E | Invalid LMP parameters |
| 0x4E1F | Unspecified |
| 0x4E20 | Unsupported LMP Parameter |
| 0x4E21 | Role change not allowed |
| 0x4E22 | LMP response timeout |
| 0x4E23 | LMP transaction collision |
| 0x4E24 | LMP PDU not allowed |
| 0x4E25 | Encryption mode not acceptable |
| 0x4E26 | Link key cannot change |
| 0x4E27 | Requested QOS not supported |
| 0x4E28 | Instant passed |
| 0x4E29 | Pairing with unit key not supported |
| 0x4E2A | Different transaction collision |
| 0x4E2B | Reserved 1 |
| 0x4E2C | QOS parameter not acceptable |
| 0x4E2D | QOS rejected |
| 0x4E2E | Channel classification not supported |
| 0x4E2F | Insufficient security |
| 0x4E30 | Parameter out of mandatory range |
| 0x4E31 | Reserved 2 |
| 0x4E32 | Role switch pending |
| 0x4E33 | Reserved 3 |
| 0x4E34 | Reserved slot violation |
| 0x4E35 | Role switch failed |
| 0x4E36 | Extended Inquiry Response too large |
| 0x4E37 | Extended SSP not supported |
| 0X4E38 | Host busy pairing |
| 0X4E3C | Directed Advertising Timeout |
| 0X4E3D | Connection terminated due to MIC failure |
| 0x4E3E | Connection Failed to be Established |
| 0X4E60 | Invalid Handle Range |
| 0x4E62 | Invalid Parameters |
| 0x4E63 | BLE Buffer Count Exceeded |
| 0x4E64 | BLE Buffer already in use |
| 0x4E65 | Invalid Attribute Length When Small Buffer Mode is Configured |
| 0x4E66 | Invalid Name length when set to more than 16 bytes |