1e41f4b71Sopenharmony_ci# Ethernet Connection Error Codes 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci> **NOTE** 4e41f4b71Sopenharmony_ci> 5e41f4b71Sopenharmony_ci> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](../errorcode-universal.md). 6e41f4b71Sopenharmony_ci 7e41f4b71Sopenharmony_ci## 2200001 Invalid Parameter Value 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci**Error Message** 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ciInvalid parameter value. 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci**Description** 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ciThis error code is reported if the parameter value is invalid. 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci**Cause** 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ciThe input parameter value is not within the valid value range. 20e41f4b71Sopenharmony_ci 21e41f4b71Sopenharmony_ci**Procedure** 22e41f4b71Sopenharmony_ci 23e41f4b71Sopenharmony_ciCheck whether the input parameter value is within the valid value range. 24e41f4b71Sopenharmony_ci 25e41f4b71Sopenharmony_ci## 2200002 Service Connection Failure 26e41f4b71Sopenharmony_ci 27e41f4b71Sopenharmony_ci**Error Message** 28e41f4b71Sopenharmony_ci 29e41f4b71Sopenharmony_ciFailed to connect to the service. 30e41f4b71Sopenharmony_ci 31e41f4b71Sopenharmony_ci**Description** 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ciThis error code is reported if a service connection failure occurs. 34e41f4b71Sopenharmony_ci 35e41f4b71Sopenharmony_ci**Cause** 36e41f4b71Sopenharmony_ci 37e41f4b71Sopenharmony_ciThe service is abnormal. 38e41f4b71Sopenharmony_ci 39e41f4b71Sopenharmony_ci**Procedure** 40e41f4b71Sopenharmony_ci 41e41f4b71Sopenharmony_ciCheck whether system services are running properly. 42e41f4b71Sopenharmony_ci 43e41f4b71Sopenharmony_ci## 2200003 System Internal Error 44e41f4b71Sopenharmony_ci 45e41f4b71Sopenharmony_ci**Error Message** 46e41f4b71Sopenharmony_ci 47e41f4b71Sopenharmony_ciSystem internal error. 48e41f4b71Sopenharmony_ci 49e41f4b71Sopenharmony_ci**Description** 50e41f4b71Sopenharmony_ci 51e41f4b71Sopenharmony_ciThis error code is reported if a system internal error occurs. 52e41f4b71Sopenharmony_ci 53e41f4b71Sopenharmony_ci**Cause** 54e41f4b71Sopenharmony_ci 55e41f4b71Sopenharmony_ci1. The memory is abnormal. 56e41f4b71Sopenharmony_ci 57e41f4b71Sopenharmony_ci2. A null pointer is present. 58e41f4b71Sopenharmony_ci 59e41f4b71Sopenharmony_ci**Procedure** 60e41f4b71Sopenharmony_ci 61e41f4b71Sopenharmony_ci1. Check whether the memory space is sufficient. If not, clear the memory and try again. 62e41f4b71Sopenharmony_ci 63e41f4b71Sopenharmony_ci2. Check whether the system is normal. If not, try again later or restart the device. 64e41f4b71Sopenharmony_ci 65e41f4b71Sopenharmony_ci## 2201005 Device Information Not Exist 66e41f4b71Sopenharmony_ci 67e41f4b71Sopenharmony_ci**Error Message** 68e41f4b71Sopenharmony_ci 69e41f4b71Sopenharmony_ciThe device information does not exist. 70e41f4b71Sopenharmony_ci 71e41f4b71Sopenharmony_ci**Description** 72e41f4b71Sopenharmony_ci 73e41f4b71Sopenharmony_ciThis error code is reported if the device information does not exist. 74e41f4b71Sopenharmony_ci 75e41f4b71Sopenharmony_ci**Cause** 76e41f4b71Sopenharmony_ci 77e41f4b71Sopenharmony_ciThe device to set or obtain does not exist. 78e41f4b71Sopenharmony_ci 79e41f4b71Sopenharmony_ci**Procedure** 80e41f4b71Sopenharmony_ci 81e41f4b71Sopenharmony_ci``` 82e41f4b71Sopenharmony_ci> hdc shell ifconfig 83e41f4b71Sopenharmony_ci``` 84e41f4b71Sopenharmony_ciCheck whether the device, for example, **eth0** or **eth1**, exists. 85e41f4b71Sopenharmony_ci 86e41f4b71Sopenharmony_ci## 2201006 Device Not Connected 87e41f4b71Sopenharmony_ci 88e41f4b71Sopenharmony_ci**Error Message** 89e41f4b71Sopenharmony_ci 90e41f4b71Sopenharmony_ciDevice disconnected. 91e41f4b71Sopenharmony_ci 92e41f4b71Sopenharmony_ci**Description** 93e41f4b71Sopenharmony_ci 94e41f4b71Sopenharmony_ciThis error code is reported if the device is not connected. 95e41f4b71Sopenharmony_ci 96e41f4b71Sopenharmony_ci**Cause** 97e41f4b71Sopenharmony_ci 98e41f4b71Sopenharmony_ciThe network interface card (NIC) is faulty. 99e41f4b71Sopenharmony_ci 100e41f4b71Sopenharmony_ci**Procedure** 101e41f4b71Sopenharmony_ci 102e41f4b71Sopenharmony_ciView the Ethernet service and netsys logs to check for the connection status information reported by the kernel. 103e41f4b71Sopenharmony_ci 104e41f4b71Sopenharmony_ci## 2201007 Failed to Write the User Configuration 105e41f4b71Sopenharmony_ci 106e41f4b71Sopenharmony_ci**Error Message** 107e41f4b71Sopenharmony_ci 108e41f4b71Sopenharmony_ciFailed to write the user configuration. 109e41f4b71Sopenharmony_ci 110e41f4b71Sopenharmony_ci**Description** 111e41f4b71Sopenharmony_ci 112e41f4b71Sopenharmony_ciThis error code is reported if an error occurs while writing data to the user configuration file. 113e41f4b71Sopenharmony_ci 114e41f4b71Sopenharmony_ci**Cause** 115e41f4b71Sopenharmony_ci 116e41f4b71Sopenharmony_ciThe system reports an error. 117e41f4b71Sopenharmony_ci 118e41f4b71Sopenharmony_ci**Procedure** 119e41f4b71Sopenharmony_ci 120e41f4b71Sopenharmony_ciA system internal error occurs. You are advised to locate the fault based on logs. 121