Mechanics

CAN ANYONE HELP WITH THE CODES P0507 AND P0171???

2006 Audi A4 • 105,000 miles

I have a B4 Audi A4 Quattro. I have a CEL that is giving the codes P0507 and P0171. I have done a little googling on this but haven't found much help. The only thing that seems to be the solution is replacing the PCV (pressure control valve). Symptoms of the car is that at stoplights or when I'm stopped anywhere with the car in neutral and the a/c off, the engine revs up on its own to about 1200-1500 rpm and then drops. It does this cycle repeatedly. When the rpm drops, sometimes it goes so low that it seams like the engine is gonna stall. Also, this does not happen when the a/c is on. Help!
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Hsurquhart85
September 18, 2012.



Ok I talked to the dealer and set appointment. PCV is the trouble all covered under warranty. While was there they checked fuel pump lobe it needs to be changed as well. Recall on both and covered under warranty.

Tiny
Cobraphilip
Oct 3, 2012.
Cobraphillip- There is a recall on the PCV? I dont have a warranty on my a4. So you got both of those repaired for free? Do I need a warranty to get a recall fixed? I was just wondering if you had a little more detail about that.

Tiny
Hsurquhart85
Oct 3, 2012.
Recall on both. My car has 116000 on the clock. Its worth calling about.

Tiny
Cobraphilip
Oct 3, 2012.
So did you need a manufacturers warranty? Or was it just the recall that qualified you. Did you get them fixed for free?

Tiny
Hsurquhart85
Oct 3, 2012.
In shop now. Warranty ran out 95000. All being fixed recall on both parts. It should be free.

Tiny
Cobraphilip
Oct 3, 2012.
Great find on that one my online repair info didnt list a recall for that.

Saturntech9
Oct 3, 2012.
Hell yea thats a good find! I just scheduled an appt with my dealer too! PCV and two other fuel related parts are being replaced for free! Thanks for all your help! This is an awesome auto car resource!

Tiny
Hsurquhart85
Oct 4, 2012.
Your welcome thats what were here for. We try are best to help everyone we can.

Saturntech9
Oct 4, 2012.
I'm miss spoke on the recalls. Fuel pump is a recall. The PCV is a TSB. Sorry I thought of that later. I'm glad to find this info. Thanks for all the help.

Tiny
Cobraphilip
Oct 4, 2012.
What is TSB? I called my audi dealer and im getting 3 parts including the PCV replaced for free.

Tiny
Hsurquhart85
Oct 4, 2012.
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