Where is the OBDii (On board diagnostic) connection port in our W203s?
Senior Member
Joined: Aug 2008
Posts: 273
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From: SE PA
2001 C320
Should be a standard OBD II connection. It's under the dashboard on the drivers side, towards the drivers door. There is a little door on there, so you have to open that to get to the connector.
Thread Starter
Junior Member
Joined: Aug 2004
Posts: 15
Likes: 0
I found it under the drivers side dash, it's covered by a pull back tab and it's the regular OBD ii connection. Now I'm just curious if it can pick up the MAF sensor like my MB mechanic said i need to change for $750 part plus 1.5 hours labour at $135. I saw the DIY for MAF and it will come in handy if I need to replace it 
edit: Thanks Pete was writing my reply while you posted. Also Drex sorry for starting a new topic b/c I did find the info after a 15 minute search on a thread from 2004 in post #22 or so, at least this one will hit google with the current thread name for future searches.
edit: Thanks Pete was writing my reply while you posted. Also Drex sorry for starting a new topic b/c I did find the info after a 15 minute search on a thread from 2004 in post #22 or so, at least this one will hit google with the current thread name for future searches.
Last edited by kokinos; Feb 4, 2009 at 04:58 PM.
Senior Member
Joined: Aug 2008
Posts: 273
Likes: 6
From: SE PA
2001 C320
Okay, good. Did you read this thread that I started a little while back?https://mbworld.org/forums/c-class-w...-cleaning.html
My dealership told me I need to replace my MAF sensor, and it was causing a CEL, I use the cleaner (specified in the thread I posted) and the MAF sensor has been fine since!
My dealership told me I need to replace my MAF sensor, and it was causing a CEL, I use the cleaner (specified in the thread I posted) and the MAF sensor has been fine since!
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Joined: Nov 2001
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From: Huntington Beach, Ca.
'17 Jaguar XF
Thread Starter
Junior Member
Joined: Aug 2004
Posts: 15
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Okay, good. Did you read this thread that I started a little while back?https://mbworld.org/forums/c-class-w...-cleaning.html
My dealership told me I need to replace my MAF sensor, and it was causing a CEL, I use the cleaner (specified in the thread I posted) and the MAF sensor has been fine since!
My dealership told me I need to replace my MAF sensor, and it was causing a CEL, I use the cleaner (specified in the thread I posted) and the MAF sensor has been fine since!
Thread Starter
Junior Member
Joined: Aug 2004
Posts: 15
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Definitely try cleaning it first. The part is $139 http://germanstar.ne/MAF.htm and it should take about 15 minutes to install. And they wonder why some refer to them as 'Stealerships'.
PS For those in the future my prices are from a dealer up here in Canada, it's seems we've had a mad increase on parts here lately, the down cycle O2 sensor was $350 up here too?
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MBWorld Fanatic!
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'17 Jaguar XF
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