P10A4 on Volkswagen
Intake Air Regulating Flap - Mechanical Malfunction
P10A4 on Volkswagen vehicles indicates intake air regulating flap - mechanical malfunction. Au7o has documented this code across 1 Volkswagen model — most commonly on Scirocco. P10A4 is a manufacturer-specific Volkswagen/Audi (VAG) code, defined by the Ross-Tech wiki as "Intake Air Regulating Flap: Mechanical Malfunction" (VAG fault code 004260). It means the engine control module has detected that the intake air regulating/swirl flap in the intake manifold is not moving correctly or its actuator is mechanically stuck or out of position. The fault commonly forces the engine into limp mode, limiting RPM to around 3000 and causing reduced power and hesitation under acceleration. Typical repair costs on Volkswagen range from $200 to $900, depending on the specific model and root cause.
Common Causes of P10A4
- •Failed or seized intake air regulating/swirl flap actuator motor in the intake manifold
- •Carbon buildup or debris jamming the flap mechanism (common on direct-injection TSI/TFSI engines)
- •Disconnected or leaking vacuum line operating the flap (on vacuum-actuated systems)
- •Faulty intake manifold runner control assembly requiring full manifold replacement
- •Damaged wiring, corroded connector, or poor electrical contact to the flap actuator
- •On some 3.0L supercharged Audi engines, a faulty Supercharger Control Valve (J808)
P10A4 on Volkswagen by Model
Volkswagen Scirocco(1 issue)
- 1.4 TSI twincharger supercharger bypass/changeover valve & magnetic clutch fault (P10A4)2008-2017
The 1.4 TSI 160 PS 'twincharger' (EA111, supercharger + turbo) suffers two related, well-documented faults. The supercharger drive uses a magnetic clutch built into the water pump that can fail to engage, giving a squeak/tick and weak low-rpm boost. Separately the supercharger bypass/changeover valve flap sticks or fails, logging fault code P10A4 and causing a sudden flat spot, loss of low-end power and limp mode, sometimes with the EML on. The 160 PS twincharger is also known for high oil consumption. VW fitted an upgraded water pump/clutch and revised valve on cars from around 2011.
Looking for P10A4 on a different make?
View P10A4 across all makes →Frequently Asked Questions
What does P10A4 mean on Volkswagen?▼
P10A4 stands for "Intake Air Regulating Flap - Mechanical Malfunction." P10A4 is a manufacturer-specific Volkswagen/Audi (VAG) code, defined by the Ross-Tech wiki as "Intake Air Regulating Flap: Mechanical Malfunction" (VAG fault code 004260). It means the engine control module has detected that the intake air regulating/swirl flap in the intake manifold is not moving correctly or its actuator is mechanically stuck or out of position. The fault commonly forces the engine into limp mode, limiting RPM to around 3000 and causing reduced power and hesitation under acceleration. On Volkswagen specifically, this code is documented across 1 model.
What causes P10A4 on Volkswagen vehicles?▼
Common causes on Volkswagen: Failed or seized intake air regulating/swirl flap actuator motor in the intake manifold, Carbon buildup or debris jamming the flap mechanism (common on direct-injection TSI/TFSI engines), Disconnected or leaking vacuum line operating the flap (on vacuum-actuated systems), Faulty intake manifold runner control assembly requiring full manifold replacement, Damaged wiring, corroded connector, or poor electrical contact to the flap actuator. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P10A4 on a Volkswagen?▼
Repair costs on Volkswagen range from $200 to $900, depending on the specific model and root cause.
Which Volkswagen models have P10A4 documented?▼
Au7o has documented P10A4 on 1 Volkswagen model: Scirocco.