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Most shops quote a full intake manifold for a P2015. You rarely need one. The fault lives in three small wearing parts, and all three can be rebuilt with the manifold in hand.

The intake manifold swirl flap repair kit for VW and Audi 2.7 and 3.0 TDI engines, covering OE references 059129711 and 059129712, listed at 51.78 USD is that rebuild. It carries a reamer (a tool that shaves a worn bore back to a true circle) and metal bushings (hard sleeves the shaft then turns in). Run the checks below before you order.

What the swirl flap does, in plain words

A swirl flap is a paddle on a shaft inside the intake tract. A small electric motor turns it. The control unit closes it at low revs and opens it at high load.

• Closed: air spins faster, so fuel and air mix and burn cleaner.
• Open: no restriction, so full airflow is not taxed.
• All engine life: the motor repositions the shaft thousands of times.

Why the flaps fail

Soot is the raw material. A diesel loops exhaust back into the intake to cut NOx (nitrogen oxides) — that is EGR (exhaust gas recirculation). The soot mixes with oil mist and bakes onto the swirl tract as hard carbon.

• Carbon packs around the shaft and narrows the gaps the paddles sweep.
• The soft plastic shaft bores wear oval after years of turning.
• The plastic linkage ball sockets open up and gain free play.
• The travel stop erodes, so the sensor reading drifts.

The control unit only compares command against feedback. When wear and carbon pull them apart, you get the codes below.

What the codes actually mean

Check live data before you spend money. Command a flap sweep with a scan tool and watch the reported position follow it.

• P2015 — position performance, bank 1: the trace lags or never reaches the lower stop.
• P2004 / P2006 — stuck open / stuck closed: the shaft is not moving at all.
• P2002 — particulate filter efficiency below threshold, bank 1. The DPF (the soot trap) needs two drive cycles to set this. A carbon-packed intake loads it faster.
• P0401 / P0404 — EGR flow faults, the usual companions. A fouled EGR valve feeds the same soot.

Then unclip the actuator and move the mechanism by hand. A bind at the shaft ends means worn bores or carbon. A bind mid-travel means carbon ridges, and free movement means electrical or linkage.

Some complaints are the sensor or its wiring, not the mechanism. On the petrol side the intake is judged by a pressure sensor, not flap feedback. The 06L906051 manifold pressure sensor and the 06L906051K pressure sensor for Volkswagen and Audi platforms cover that job.

Q7 (2006-2015): coolant loss with no visible drip, white smoke or misfire-style running means an EGR cooler leaking internally. No intake repair holds while the cooler feeds the tract.

Repair kit, or a complete manifold?

The casting number does not choose the repair. The state of the mechanism does.

• Linkage only: sockets sloppy, stop eroded, bores still round. Audi's own repair set (059 198 212) fixes this, at about 7-8 GBP plus VAT per side.
• Bores worn oval: a new motor or linkage inherits the same free play. Ream each bore round and fit metal bushings — that is the 51.78 USD kit.
• Casting done: flaps melted, shaft coked solid, tract packed shut. Order a complete manifold — UK forum pricing runs about 350-700 GBP fitted.

Owner reports add a warning: a new motor on worn linkage and bores logs the same code again. The wear is spread across three parts, so the repair must match it.

How the reamer-and-bushing job is done

Bench work on a removed manifold, and the sequence matters more than strength.

1. Unclip the linkage and remove the actuator's three screws. They thread into plastic — no threadlock, refit by feel.
2. Reconnect the glow-plug wiring. Forum write-ups name it the most forgotten connection.
3. Remove the manifold, then extract the worn shaft and linkage.
4. Run the reamer through each worn bore. It shaves just enough plastic to erase the oval shape and the carbon ridges.
5. Fit the metal bushings. The shaft now turns in steel instead of soft plastic.
6. Rebuild the linkage with new ball fittings, then refit shaft, motors and manifold.
7. Clean carbon from the tract and flap gaps, and service the EGR side in the same visit.

Verify before the car leaves. Run the flap sweep on live data and watch the trace track the command through both stops. Then road-test with the position signal on screen.

Two companion jobs share this air path. The charge-pipe side is covered in the Transporter T5 (2003-2010) intercooler pipe and hose guide, the cold-start side in the glow plug wiring harness guide for the 2004-2006 VW 1.9 TDI.

Frequently asked questions