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OBD Diagnostic socket fault

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Old May 21, 2020 | 04:04 PM
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e250 cdi
OBD Diagnostic socket fault
My E250 cdi diagnostic socket doesn’t work, I have checked fuse box no 73 in boot and fuse doesn’t appear blown . Has this happened to anyone

E250 CDi
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Old May 21, 2020 | 06:17 PM
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e250 cdi
Originally Posted by Plutoe
What do you mean dosent work?? More detail
The OBD socket ! Socket you connect the scanner to
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Old Jun 17, 2020 | 01:04 PM
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Old Jun 18, 2020 | 08:55 AM
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And how did you confirm on it's faulty status? Is it scanner that doesn't light up or something? Might be a bent or broken pin
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Old Jun 20, 2020 | 06:19 AM
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Originally Posted by WIN ER
And how did you confirm on it's faulty status? Is it scanner that doesn't light up or something? Might be a bent or broken pin
Hi I have checked the pins they seem fine ( looking back I visited Benz dealership to have a Bluetooth adapter connected Mercedes me which stop working last year I thought the problem was to do with the connected adapter now I know better . ) just hope it’s not the computer that damaged could be a costly repair 🤞
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Old Jun 20, 2020 | 10:36 AM
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e250 cdi
I have checked fuse in boot 73 not blown can there be another fuse for the diagnostic socket.Obd 2 My fuse chart say fuse 73 in boot ?????🤷‍♀️
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Old Jun 30, 2020 | 12:31 PM
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Mine says “link error”. Tried removing the diagnostic fuse in the trunk fuse box but no change.


dealer thinks it may be a communication error with the ECU and the ECU may need to be replaced. I’m taking it in next week
Last edited by DeutscheBenz726; Jun 30, 2020 at 12:34 PM.
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Old Jun 30, 2020 | 05:02 PM
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Originally Posted by E350_Sport
Mine says “link error”. Tried removing the diagnostic fuse in the trunk fuse box but no change.


dealer thinks it may be a communication error with the ECU and the ECU may need to be replaced. I’m taking it in next week
. Oh even when u remove the Obd fuse the message still says link error on the scanner ??? What fuse number for the obd does it say on your vehicle chart ??
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Old Jun 30, 2020 | 07:15 PM
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Originally Posted by snupys
. Oh even when u remove the Obd fuse the message still says link error on the scanner ??? What fuse number for the obd does it say on your vehicle chart ??
yes, I pulled fuse number 73 which was the one that the little paper that came with the car. The scanner went blank I replaced the fuse but the scanner still read “link error”
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Old Jul 4, 2020 | 05:28 AM
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e250 cdi
Originally Posted by E350_Sport
yes, I pulled fuse number 73 which was the one that the little paper that came with the car. The scanner went blank I replaced the fuse but the scanner still read “link error”
My issue is slightly different as the scanner remains blank with or without fuse , In your case you get a link error message
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