All UDS services

Write Data By Identifier

0x2E

The Write Data By Identifier service allows the client to write a data value to a specific Data Identifier (DID) on the server.

Negative response codes
0x130x210x310x330x72

Request

SID 0x2E · 4 bytes
Len (bits)
Parameter description
Value (hex)
8
Write Data By Identifier SID
0x2E
16
dataIdentifierTwo-byte identifier specifying the target data record to write.
0x0000-0xFFFF
n*
8
dataData bytes to write to the specified data identifier.
0x00-0xFF

n = Length of data to write (in bytes)

Positive response

SID 0x6E
Len (bits)
Parameter description
Value (hex)
8
Write Data By Identifier SID
0x6E
16
Echo of dataIdentifier
0x0000-0xFFFF