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No Adapter works for PROXI Alignment

Posted: 13 Mar 2026, 12:31
by Stefan92
Hello and greetings to all of you,

For over a week I'm trying to do a PROXI Alignment on my Peugeot Boxer (same model as the Fiat Ducato Typ 250) and getting really frustrated. I have tried 4 cheap Chinese OBD2 ELM327 devices and also removed the 120ohm resistor on one of them. Then I bought the expensive OBDLink CX, which didn't work on my computer and finally bought the OBDLink LX, which I am trying right now. I was able to connect all of them in MES, however, when trying to connect to "CAN Setup / PROXI Alginment Procedure (250)" (as well as to other modules), I get the error "Failed to connect to Body Computer (BCM)".
Depending on the module I try to connect, I also get the error message "ELM327 -> ECU Connection failed!". When testing the interfaced in MES Settings, everythink was ok (with all the devices).
I have a registered licence for MES and use the yellow adapter cable by the way.

Can anyone help me please? All I want is to disconnect the old radio in order to install a new one and the PROXI Alignment procedure keeps me stuck here...

Thank you in advance!

Test interface connection:
COMMAND: ATZ
RESPONSE:
ELM327 v1.4b

COMMAND: ATI
RESPONSE: ATI
ELM327 v1.4b

COMMAND: ATE0
RESPONSE: ATE0
OK

COMMAND: ATL0
RESPONSE: OK

COMMAND: ATH0
RESPONSE: OK

COMMAND: ATSPC
RESPONSE: OK

COMMAND: ATS0
RESPONSE: OK

COMMAND: ATCAF0
RESPONSE: OK

COMMAND: ATCFC0
RESPONSE: OK

COMMAND: ATCRA 7B0
RESPONSE: OK

COMMAND: ATSH 7B0
RESPONSE: OK

COMMAND: ATAT1
RESPONSE: OK

COMMAND: ATST41
RESPONSE: OK

COMMAND: ATBI
RESPONSE: OK

This interface is compatible with ELM 327 1.4! Should connect properly with all CAN modules.


The cheap chinese devices had a speed rate of 38400 by the way, while the expensive OBDLINK LX (Bluetooth), only has 9600 (which I can't change):
Please connect the interface to a car!
Scanning ...

OBDLink / Vgate vLinker (USB/Bluetooth) / STN1155 v5.6.19 interface found at port COM12, speed 9600bps

COMPLETED


Best regards
Stefan