1# NFC Error Codes 2 3> **NOTE** 4> 5> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](errorcode-universal.md). 6 7## 3100101 8 9**Error Message** 10 11NFC state is abnormal in service. 12 13**Description** 14 15The NFC service fails to enable or disable NFC. 16 17**Possible Causes** 18 191. Communication with the NFC service failed. 202. The NFC chip communication is abnormal. 21 22**Solution** 23 241. Enable or disable NFC again. 252. Enable or disable NFC again or restart the device, and try again. 26 27## 3100201 28 29**Error Message** 30 31Tag running state is abnormal in service. 32 33**Description** 34 35An error occurs when the NFC service executes the tag service logic. 36 37**Possible Causes** 381. The tag parameters do not match the API to invoke. 392. The NFC is disabled. 403. The tag is disconnected before the tag operation. 414. The tag chip returns an error status or response timeout. 425. Binding with the NFC service has not been established. 43 44**Solution** 451. Check whether the NFC parameters match the API to invoke. 462. Enable NFC for the device. 473. Connect to the tag and then perform the read and write operations. 484. Touch and read the card again. 495. Exit the app and read the card again. 50