OBD port not working
Thread Starter
Junior Member
Joined: Sep 2019
Posts: 39
Likes: 5
From: Moscow
S-class W221
OBD port not working
So i bought my car W204 2008 model 2yrs ago, but the AC isn't working ... i managed it throughout last summer like that because i didnt have money to spend on repairing it, So today i took the car for repair , i bought new AC radiator and they filled put refrigrant in the car, after that the AC still didnt work, they tried to diagnosed the car and found out OBD port isn't working, has anyone ever repaired their OBD port before??? is it a big problem? will it cost me alot ?? most of the mechanics i have asked couldn't answer the question, they said they don't repair OBD port
Super Member
Joined: Jul 2016
Posts: 502
Likes: 81
From: Newcastle Upon Tyne
W204 C220CDI 2011
Super Member
Joined: Feb 2007
Posts: 601
Likes: 285
From: Republic of Texas
W203 W212 W211 R53MCS
You need to get a better mechanic. What is wrong with the OBD2 port?? Is there no POWER, GROUND, LOW CAN OR HI CAN??? Pin 4 and 5 are ground, Pin 16 is power and 6/14 are for CAN communication. CAN communication goes straight to the Central Gateway which is part of the front SAM.
Newbie
Joined: Feb 2016
Posts: 7
Likes: 0
From: Paris
CLASS C350 CDI 2010 PACK AMG (EUROPE)
W204 OBD port not working
You need to get a better mechanic. What is wrong with the OBD2 port?? Is there no POWER, GROUND, LOW CAN OR HI CAN??? Pin 4 and 5 are ground, Pin 16 is power and 6/14 are for CAN communication. CAN communication goes straight to the Central Gateway which is part of the front SAM.
can you help me please, i have the same issue my OBD port is not working it seem its the CAN HIGH or CAN LOW because i have 12volt on Pin 16 and Ground and my SDCONNECT is POWER ON when is pluged, but i dont know Where are the CAN high and low in the SAM box in the engine compartement ? The FUSE 16 is OK
i want to connect my SD CONNECT because i have an ESP error (ESP is not working)
Last edited by amgzer; Oct 28, 2022 at 01:59 AM.
Newbie
Joined: Jun 2023
Posts: 1
Likes: 0
C class 204 2008
Obd
hello MBENZTECH
can you help me please, i have the same issue my OBD port is not working it seem its the CAN HIGH or CAN LOW because i have 12volt on Pin 16 and Ground and my SDCONNECT is POWER ON when is pluged, but i dont know Where are the CAN high and low in the SAM box in the engine compartement ? The FUSE 16 is OK
i want to connect my SD CONNECT because i have an ESP error (ESP is not working)
can you help me please, i have the same issue my OBD port is not working it seem its the CAN HIGH or CAN LOW because i have 12volt on Pin 16 and Ground and my SDCONNECT is POWER ON when is pluged, but i dont know Where are the CAN high and low in the SAM box in the engine compartement ? The FUSE 16 is OK
i want to connect my SD CONNECT because i have an ESP error (ESP is not working)
hi there did you get the solution to make it work?
thanks HARIS AMG
Hi there guy I made my port work turns out it was a blown fuse please make sure you check your fuses before carrying out any other work just to let you know there is a 5 amp fuse which powers the diagnostic port in the front Sam number 16. I watched a video on a c class 204 chassis and the weird guy who has conned everyone including me changed a 10 amp fuse in the boot. This is false the fuse sits at the front of the car. And now mines getting a reading with a multi meter before it wasn’t. Thank you HARIS AMG.
Last edited by Haris.amg; Jun 24, 2023 at 10:49 PM.
Thread Starter
Junior Member
Joined: Sep 2019
Posts: 39
Likes: 5
From: Moscow
S-class W221
I took my car to a mechanic to diagnose my transmission, and the guy fixed the OBD port without even charging me for it, i guess its truly a minor issue like fuse thats why he didnt even bother to charge me for it, after scanning, he told me my car was vibrating because of misfire, not because of transmission
