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1# Bluetooth 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## 2900001
8
9**Error Message**
10
11Service stopped.
12
13**Description**
14
15The Bluetooth service is stopped, and the APIs related to the Bluetooth service cannot be called.
16
17**Possible Causes**
18
19The Bluetooth service fails to start.
20
21**Solution**
22
23Start the Bluetooth service.
24
25## 2900003
26
27**Error Message**
28
29Bluetooth switch is off.
30
31**Description**
32
33Bluetooth is disabled.
34
35**Possible Causes**
36
37Bluetooth is disabled.
38
39**Solution**
40
41Enable Bluetooth.
42
43## 2900004
44
45**Error Message**
46
47Profile is not supported.
48
49**Description**
50
51The profile is not supported.
52
53**Possible Causes**
54
55The profile is not supported by the device.
56
57**Solution**
58
59Check whether the device supports the profile. Use a profile supported by the device.
60
61## 2900099
62
63**Error Message**
64
65Operation failed.
66
67**Description**
68
69The operation failed.
70
71**Possible Causes**
72
73The profile is not supported by the device.
74
75**Solution**
76
77Perform this operation again.
78
79## 2901000
80
81**Error Message**
82
83Read forbidden.
84
85**Description**
86
87The read operation is not allowed.
88
89**Possible Causes**
90
91The caller does not have the read permission.
92
93**Solution**
94
95Check whether the caller has the read permission.
96
97## 2901001
98
99**Error Message**
100
101Write forbidden.
102
103**Description**
104
105The write operation is not allowed.
106
107**Possible Causes**
108
109The caller does not have the write permission.
110
111**Solution**
112
113Check whether the caller has the write permission.
114
115## 2901054
116
117**Error Message**
118
119IO error.
120
121**Description**
122
123The I/O operation failed.
124
125**Possible Causes**
126
127The I/O transmission is abnormal.
128
129**Solution**
130
131Perform this operation again.
132