91 740, 94 850 turbo and 95 940 turbo OBD codes?

cquarts · Post by **cquarts** » 12 Dec 2007, 07:49

how do i find out what OBD, I or II, these three different volvos use? I have one of each and hope they all use the same. Thanks clay

Post by **billofdurham** » 12 Dec 2007, 12:38

The 740 and 850 are definitely OBD1. The 940 will probably be the same but it depends on when it was built in '95. Those built after September/October could have OBD11.

It is easy to tell by looking for the diagnostic boxes in the engine compartment. 740 and 940 are in front of the left hand strut tower and the 850 is in the front right hand side of the engine bay alongside the washer reservoir filler.

For the 740/940 check this thread:

https://www.matthewsvolvosite.com/chat/p ... c&start=12

For the 850 download the manual pinned at the top of the 850 forum and go to the .pdf file 'tests with codes turbo'.

Bill.