Apple Error Codes Database
Comprehensive Apple Error Codes
Explore our extensive database of over 5,000 Apple Ecosystem error codes. From macOS to iOS, tvOS, watchOS, and visionOS, each code is presented with its name and a concise description to help you quickly pinpoint and resolve issues.
Whether you’re a developer refining an app or a user troubleshooting a system glitch, this resource empowers you with the knowledge to decode cryptic errors and find actionable solutions. No more guesswork—just clear guidance to keep your projects and devices running smoothly.
| Number | Name & Description | Platforms | Framework | Header |
|---|---|---|---|---|
| 36 (0x24) |
kBluetoothHCIErrorLMPPDUNotAllowed
LMP PDU request is not allowed by the controller.
|
macOS | IOBluetooth | Bluetooth.h |
| 34 (0x22) |
kBluetoothHCIErrorLMPResponseTimeout
LMP response from remote Bluetooth device timed out
|
macOS | IOBluetooth | Bluetooth.h |
| 63 (0x3F) |
kBluetoothHCIErrorMACConnectionFailed
Bluetooth HCI MAC connection failed.
|
macOS | IOBluetooth | Bluetooth.h |
| 64 (0x40) |
kBluetoothHCIErrorMax
Bluetooth HCI error maximum.
|
macOS | IOBluetooth | Bluetooth.h |
| 9 (0x09) |
kBluetoothHCIErrorMaxNumberOfConnections
Bluetooth HCI maximum number of connections reached.
|
macOS | IOBluetooth | Bluetooth.h |
| 10 (0x0A) |
kBluetoothHCIErrorMaxNumberOfSCOConnectionsToADevice
Reached maximum SCO connections to the device.
|
macOS | IOBluetooth | Bluetooth.h |
| 7 (0x07) |
kBluetoothHCIErrorMemoryFull
Bluetooth controller memory is full.
|
macOS | IOBluetooth | Bluetooth.h |
| 2 (0x02) |
kBluetoothHCIErrorNoConnection
Bluetooth: HCI no connection error.
|
macOS | IOBluetooth | Bluetooth.h |
| 21 (0x15) |
kBluetoothHCIErrorOtherEndTerminatedConnectionAboutToPowerOff
Bluetooth connection terminated; other end about to power off.
|
macOS | IOBluetooth | Bluetooth.h |
| 20 (0x14) |
kBluetoothHCIErrorOtherEndTerminatedConnectionLowResources
Bluetooth HCI connection terminated by other end due to low resources.
|
macOS | IOBluetooth | Bluetooth.h |
| 19 (0x13) |
kBluetoothHCIErrorOtherEndTerminatedConnectionUserEnded
Remote device ended the connection at user’s request.
|
macOS | IOBluetooth | Bluetooth.h |
| 4 (0x04) |
kBluetoothHCIErrorPageTimeout
Bluetooth HCI page timeout.
|
macOS | IOBluetooth | Bluetooth.h |
| 24 (0x18) |
kBluetoothHCIErrorPairingNotAllowed
Pairing is not allowed under current Bluetooth settings.
|
macOS | IOBluetooth | Bluetooth.h |
| 41 (0x29) |
kBluetoothHCIErrorPairingWithUnitKeyNotSupported
Pairing with a unit key is not supported
|
macOS | IOBluetooth | Bluetooth.h |
| 48 (0x30) |
kBluetoothHCIErrorParameterOutOfMandatoryRange
Bluetooth HCI parameter out of mandatory range.
|
macOS | IOBluetooth | Bluetooth.h |
| 39 (0x27) |
kBluetoothHCIErrorQoSNotSupported
Bluetooth HCI Quality of Service not supported.
|
macOS | IOBluetooth | Bluetooth.h |
| 45 (0x2D) |
kBluetoothHCIErrorQoSRejected
QoS request was rejected by the Bluetooth controller.
|
macOS | IOBluetooth | Bluetooth.h |
| 44 (0x2C) |
kBluetoothHCIErrorQoSUnacceptableParameter
QoS parameter is unacceptable to the Bluetooth controller.
|
macOS | IOBluetooth | Bluetooth.h |
| 23 (0x17) |
kBluetoothHCIErrorRepeatedAttempts
Bluetooth HCI repeated connection attempts detected.
|
macOS | IOBluetooth | Bluetooth.h |
| 52 (0x34) |
kBluetoothHCIErrorReservedSlotViolation
Bluetooth HCI reserved slot was violated during operation.
|
macOS | IOBluetooth | Bluetooth.h |