1# Power Manager Error Codes 2 3<!--Kit: Basic Services Kit--> 4<!--Subsystem: PowerManager--> 5<!--Owner: @zhang-yinglie; @volcano_wang--> 6<!--Designer: @wangyantian0--> 7<!--Tester: @alien0208--> 8<!--Adviser: @w_Machine_cc--> 9 10> **NOTE** 11> 12> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](../errorcode-universal.md). 13 14## 4900101 Service Connection Failure 15 16**Error Message** 17 18Failed to connect to the service. 19 20**Description** 21 22This error code is reported if a service connection failure occurs. 23 24**Possible Causes** 25 261. The system service stops running. 27 282. The internal communication of system services is abnormal. 29 30**Procedure** 31 32Check whether the system services are running properly. 33 341. Run the following command on the console to view the current system service list: 35 36 ```bash 37 > hdc shell hidumper -ls 38 ``` 39 402. Check whether **PowerManagerService** is included in the system service list. 41 42## 4900102 System Shutting Down 43 44**Error Message** 45 46Operation failed. The system is shutting down. 47 48**Description** 49 50This error code is reported when an operation failed during system shutting down. 51 52**Possible Causes** 53 54The system is shutting down. 55 56**Procedure** 57 58Make sure that the operation is performed when the system is running properly. 59 60## 4900201 Frequent Status Refreshes 61 62**Error Message** 63 64The device activity is being refreshed too frequently; the minimum time interval is 100 ms. 65 66**Description** 67 68This error code is reported if the refresh of the device activity status fails due to short intervals (< 100 ms). 69 70**Possible Causes** 71 72The device activity status is frequently refreshed. 73 74**Procedure** 75 76Each refresh must be spaced at least 100 ms apart. 77