P0491

[duceduce005]

I have a 2013 A6 3.0t and had a CEL code P0491 come up. I went to the dealership and they stated there was insufficient air flow from Bank #1 Combi valve. They are quoting $1300 to install a new valve. Should I fix it from the dealership? If so, is this a relatively easy fix that I should go to any mechanic for? Will I fail emissions if I don't fix it? Should I just not fix it and get the engine light removed to see if it comes back up again? My car is currently at 62k miles.

[ntsantos]

Check you vacuum hoses and make sure nothing is loose. The tech may say bad combi valve, but it could be something as simple as a loose hose or kinked hose. If it is a bad combi valve, then they cost about $160 if you want to replace it yourself. I've never done it, but it looks like a pita, but better than $1300.

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