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Replacement of OBD(part A) on '95 S/Wagon

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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Year and Model: 850 - 1995
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Replacement of OBD(part A) on '95 S/Wagon

Post by theiceman69 » Fri Apr 03, 2020 3:44 am

After months of cogitating, I finally decided that Part A of the OBD required replacing - 25 years of heat ha taken it's toll - the pins/springs under the button had decided to quit. I purchased a new Part A, and after a small struggle removed the old one from it's location. Carefully putting new parts into place, I decided to try it out. Insert jumper into No7, switch on. Noted one brief flash from the lamp but when I tried to get a code/fault, nothing!!. What have I done wrong or what do I need to do further?

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