How to identify ODB2A and ODB2B
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How to identify ODB2A and ODB2B
Clearly there is one major difference that ODB2A has two Same size connector where as ODB2B has three Same size connectors.
OB2A
ODB2B
I want to know about the following ECU is it A or B
It came with F18B VTEC SOHC.
OB2A
ODB2B
I want to know about the following ECU is it A or B
It came with F18B VTEC SOHC.
Honda-Tech Member
Joined: Apr 2011
Posts: 255
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From: South OC, CA
Re: How to identify ODB2A and ODB2B
On OBD2A ECUs B is used for connection to the TCU on an automatic car and the D serves the same purpose on OBD2B ECUs. But other than that it would be very hard to tell. 
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AWD: Jeff
Southern California (Sales)
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Jan 18, 2007 01:33 PM