1e41f4b71Sopenharmony_ci# RunningLock锁错误码 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci> **说明：** 4e41f4b71Sopenharmony_ci> 5e41f4b71Sopenharmony_ci> 以下仅介绍本模块特有错误码，通用错误码请参考[通用错误码说明文档](../errorcode-universal.md)。 6e41f4b71Sopenharmony_ci 7e41f4b71Sopenharmony_ci## 4900101 连接服务失败 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci**错误信息** 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ciFailed to connect to the service. 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci**错误描述** 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ci操作失败，连接系统服务发生异常。 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci**可能原因** 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ci1. 系统服务停止运行。 20e41f4b71Sopenharmony_ci 21e41f4b71Sopenharmony_ci2. 系统服务内部通讯发生异常。 22e41f4b71Sopenharmony_ci 23e41f4b71Sopenharmony_ci**处理步骤** 24e41f4b71Sopenharmony_ci 25e41f4b71Sopenharmony_ci检查系统服务是否正常运行。 26e41f4b71Sopenharmony_ci 27e41f4b71Sopenharmony_ci1. 在控制台中输入如下命令，查看当前的系统服务列表。 28e41f4b71Sopenharmony_ci 29e41f4b71Sopenharmony_ci ```bash 30e41f4b71Sopenharmony_ci > hdc shell hidumper -ls 31e41f4b71Sopenharmony_ci ``` 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ci2. 查看系统服务列表中是否包含PowerManagerService系统服务。 34