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I am sending the following commands to my Hyundai i20 2012 model (OBDLink SX Bluetooth device):

AT Z
AT H1
AT L1
AT S1
AT AL
AT SP6
AT SH 7D1
18 00 FF 00

The response I am getting is 7D9 10 0B 58 03 51 02 80 52.

7D9 - response for header 7D1
10 - line no.
0B - 0B(in hex) bytes of data valid (0B = 11 in decimal)

So I should get multiple lines of data and 3 fault codes. But I am receiving only this 1st line of data always. How do I get the remaining lines? Am I missing any AT command for the ELM 327?

I tried AT CM 000, AT CF 000, AT ST FF but not of much use. I always keep getting the 1st line of data only.

  • I see you're using AL, have you tried AR? I'm not sure what it does, but "automatic receive" sounds like something worth investigating. – JPhi1618 Aug 17 '17 at 19:36
  • @JPhi1618 No AT AR doesn't work too – Soumya Sen Aug 21 '17 at 7:55
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you need to send 30 00 00 00 00 00 00 00 to get the remaining response frames

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