OBD I or OBD 2?
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Re: OBD I or OBD 2? (Xssesive)
OBD1 was cars from 94 to 95, then 96 and up went to OBD2. In case you don't know, OBD = ON BOARD DIAGNOSTICS
Anything before 94 was pre-OBD or as some would say it was OBD1 but in reality it was never deemed that way. By the way OBD3 is coming to a car near you ........ :cry
Anything before 94 was pre-OBD or as some would say it was OBD1 but in reality it was never deemed that way. By the way OBD3 is coming to a car near you ........ :cry
Pro
Joined: Nov 1999
Posts: 623
Likes: 0
From: Toronto, ON, Canada
Re: OBD I or OBD 2? (tjwong)
Actually, I may be wrong but wasn't '93 and older considered ODB1, '96 and newer is ODB2, '94 and '95 was ODB1.5?
I have a '94 and the PCM is ODB1 but the ALDL connector is ODB2. This is also the years that changed the ECU to be flash upgradable.
I have a '94 and the PCM is ODB1 but the ALDL connector is ODB2. This is also the years that changed the ECU to be flash upgradable.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Re: OBD I or OBD 2? (XTwinTurbo)
I don't think there was ever a OBD1.5......it was just that in 94 it was a transitional point within GM some cars got the OBD2 connector and some got the OBD1 connector, it was a mid year transition where it happened. Most 95 F cars got the OBD1 connector while almost all Y bodies got the OBD2 connector. Even in 95 there was a few Y bodies that got out with OBD1 connectors. I know of at two that did, my 95 has the OBD2 connector.
Who knows why it happened that way at the factory, maybe they just had to use up what was in the parts bins?
Who knows why it happened that way at the factory, maybe they just had to use up what was in the parts bins?
