The Quick Answer above is the generic definition. What follows is the model-specific detail for the Volkswagen models that log P2004.
DTC/P2004·Volkswagen
P2004 on Volkswagen: Causes, Symptoms and Fix Cost
Quick Answer
Moderate SeveritySafe to drive (short-term)Volkswagen
P2004 on a Volkswagen means the intake manifold runner flaps are stuck in the open position. These flaps change the length of the intake path to optimise airflow at different RPM ranges. When stuck open, the engine loses low-speed torque and may run roughly at idle because airflow is optimised for high RPM only.
Typical repair cost, all makes€110 - €1000
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Get Skanyx freeWhat does P2004 mean on a Volkswagen?
Volkswagen Golf
2004-2024The Golf Mk5 and Mk6 with the 2.0 TFSI (EA113/EA888) and 2.0 TDI (EA189/EA288) engines are extremely prone to intake manifold runner failures. The plastic flaps crack and the metal linkage rods wear through their pivot points. Repair kits that replace the flaps and the linkage are widely available and are usually cheaper than a complete manifold.
What causes P2004 on a Volkswagen?
Beyond the generic causes listed on the main P2004 page, these are the patterns noted for Volkswagen models:
Volkswagen GolfPlastic runner flap cracking on 2.0 TFSI/TDI intake manifolds
Volkswagen GolfMetal linkage rod pivot wear
Volkswagen GolfCarbon buildup jamming flaps on TDI engines
How to diagnose P2004 on a Volkswagen with OBD2
Follow these steps to pinpoint the root cause of P2004:
- Listen for a rattling or clicking noise from the intake manifold at idle and during acceleration. Broken flaps or linkage rods often produce a distinct metallic rattle.
- Remove the intake manifold top cover or use a borescope to visually inspect the runner flaps. Check that all flaps move freely and none are cracked, broken, or jammed with carbon deposits.
- Test the runner control actuator motor by commanding it on and off with a diagnostic scanner in actuator test mode. You should hear the motor activate and see the flaps move.
- Check the actuator motor electrically: verify power supply, ground, and motor resistance. A seized motor will draw excessive current or show very low resistance.
- If the flaps and actuator test good, check for vacuum leaks (on vacuum-actuated systems) or wiring faults between the ECU and the actuator motor.
How much does P2004 cost to fix on a Volkswagen? (EUR)
Estimated repair costs for P2004 in EUR, compiled across makes. Volkswagen costs typically sit in the middle of each range.
Prices estimated as of March 2026. Costs vary by region, vehicle, and shop.
Codes related to P2004
These codes are often seen alongside P2004 or point to related issues, on any make:
Looking for the full P2004 reference (all makes, full diagnosis flow, complete repair cost matrix)?
See the main P2004 guideSkanyx · Volkswagen
Diagnose P2004 on your Volkswagen
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