P0172 system too rich right bank 1
#1
#2
There are several issues that can cause this code. Start checking all your engine vacuums and intake piping. Unplug your maf and see if your car runs better. Check your front 02 sensor voltage readings.
Generally when you get a bank 1 code start looking on the intake side of the engine first.
Generally when you get a bank 1 code start looking on the intake side of the engine first.
#4
I know this reply is a little late, but I just came across this post while looking for something else. I had this code on 2 volvos within the past few months. In both cases it was a deteriorated vac. elbow on the left front of the engine (looking from the front), below the intake manifold and behind the ps pump. I seem to recall that the mathews volvo site had a post with photos - it might be worth a search if you're still having a problem.
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pnhons
Volvo S70
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04-16-2011 10:04 AM