Audi S4/S5 3.0T P2007 After Supercharger Work: Stuck Intake Flaps
You put the supercharger back on, and two drives later the check engine light says P2007. Most of the time the flaps aren't broken. They just got caught when it went back together.
The Short Answer (TL;DR)
On a B8 Audi S4 or S5 with the 3.0 supercharged V6, a P2006 or P2007 (intake manifold flap stuck closed) right after the supercharger has been off usually means one of two things. Either the flaps popped over the stop lip when the manifold was disturbed, or two vacuum lines got swapped. Owners on this Audizine thread fixed both without new parts. Hold the flaps open while you seat the lower manifold, and check the hose order against a photo.
The complaint
The thread starter pulled the supercharger on his B8 S4 to put on a Stage 2 pulley. Everything went back together fine, but after two key cycles he got a P2007. He checked for pinched vacuum lines and found none. With the blower off, he had also started pulling the fuel rail to clean the intake valves, then put it back. Later replies come from people who had the blower off for a pulley, a thermostat, a water pump, or a PCV valve and got the same codes. That includes one on a 2012 A7 with the same engine.
Why it happens
Each lower intake manifold has flaps on a shared rod, worked by a vacuum actuator. A shiny ridge inside the runner stops the flaps when vacuum pulls them open. If the manifold is moved without vacuum on the actuator, the flaps can flip over that ridge to the wrong side. Then they jam closed. One reply says stuck flaps let the runners pass only about 30% of normal airflow, which is why the car feels down on power.
Fix 1: Reset the flaps
- With the supercharger off, check whether the flaps on each bank move. The thread starter found his left bank stuck.
- The service procedure one owner quoted says to open the flaps with a hand vacuum pump before installing the lower manifold. Other owners say you don't need the pump. The flaps are all on one rod, so you can push one open by hand or move the arm on the actuator.
- Hold them slightly open while you tighten the manifold down, because they can flip back before it's tight.
- Once everything is tight, you should be able to press the flaps open. If you can't, they're on the wrong side.
Fix 2: Check the vacuum lines
Two owners said their real problem was two vacuum hoses swapped after the blower came off. One got a stuck-closed code on one bank and a stuck-open code later, which pointed to swapped lines. One suggested logic from the thread: there's a single vacuum line that splits to both actuators, so a code on only one bank points more toward a stuck flap than a vacuum leak. Take a photo of the hose routing before you pull anything. Hose layout changed across B8 model years.
The thread doesn't list torque specs, part numbers, or whether any coding is needed after the reset. One owner asked about coding and got no clear answer.
If the manifold itself is damaged
If you find broken flaps, a cracked flange, or a damaged runner, replace the manifold. We sell left and right intake manifolds for the 2010-2016 S4 and S5 3.0L. Check your year and engine before you order.
Shop S4/S5 3.0L intake manifolds
Frequently Asked Questions
Do I need a new manifold for P2007 after supercharger work?
Usually not, according to this thread. Most owners fixed it by resetting the flaps or correcting the vacuum hoses.
Will the power come back once the flaps are fixed?
The owners who fixed it reported the codes went away. The weak, no-pull feeling matches flaps stuck closed.
Source: Audizine: P2007 intake manifold flap stuck closed. The owners' photos and video are on that thread.
