OBD I or II

[lesgawlik]

'95 C220

Is this car an OBD I or OBD II? I see some reference to it being a II, even though it's a year earlier than required by law. One scantool manufacturer states that a '94 is OBD II, but that the '95 wasn't. I did see the round diagnostic plug on the passenger side under the hood, which leads me to the next question. If it;s a II, how do I use the scan tools with the rectangular plug? Is there a connector?

Thanks

[jnenad16]

yes, most 94 and up benzes are OBD2, and starting from 96, all are. the OBD connector is under the steering wheel, you will see a black rectangular cap, just flip it open and the plug will be exposed.

nenad

[lesgawlik]

Thanks. I will probably get a scan tool, but before I do, can I clear a CE condition by pulling fuse 32?

[jnenad16]

you can clear the CEL by disconnecting the batter for a few minutes, but if the fault is still present, the light will come back on after a few starts.

nenad

[Powerslave]

guys, I've got the '98 c180

AND THERE'S NO DAMN OBD PORT!

am I blind?

[jnenad16]

is should be under the steering wheel. however, as far as I know, OBD2 is a standard on US spec vehicles, I dont know if it extends to any other markets around the world.

nenad

[lesgawlik]

I haven't gotten around to taking off the panel under the instrument panel, so I don't know whether there is a rectangular ODB II plug there, but I did see the big round plug on the pass side under the hood.

Am I correct that the round plug is a diagnostic port?

Did MB put a round diag plug and an OBD II port on the same car?

[lesgawlik]

I know it's bad form to answer one's own post, but I did just poke around and find a black plastic cover, which when pried open, looks alot like an ODB II port, no tools required.

[jnenad16]

yes that is the OBD port under that plastic flip cover, and the port in the engine compartment is the factory scanner port.

nenad

[black96benz]

Yeah there is an odbII port and a diagnostic port under the hood on my car. The round diagnostic handles all codes including srs, abs, climate control, engine and emissions. OdbII only handles engine and emissions codes.