OBD Connection Just One Wire

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New User
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Joined: Sat May 09, 2020 5:22 pm

OBD Connection Just One Wire

Post by tabascojoe »

How is it that the OBD connection is just a single wire?
For communication you need at least 2 wires, one for data and one for ground (or so I assume).
It baffles me that the OBD is communicating over a single wire.

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Dara DeGrand
ADS Team
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Joined: Mon Dec 02, 2013 1:34 pm

Re: OBD Connection Just One Wire

Post by Dara DeGrand »

That is not how it works. The wire populated in the plug is the K line, which is data over a single wire.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

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