P2279 on SEAT: How to Diagnose & Fix
Intake Air System Leak
1 SEAT model · 1 documented issue · 1 critical · $700-$3,000 repair
P2279 on SEAT by model: symptoms, diagnosis and fix
The CAVD 1.4 TSI Twincharger (supercharger + turbo) in Leon Mk2 / Golf Mk6 / Scirocco / Touran is double-trouble: the EA111 timing-chain stretch issue AND supercharger magnetic-clutch failure. Combined repair if both fail is among the most expensive on the platform.
Common Symptoms
- cold start rattle
- whine from supercharger
- limp mode
- reduced power
How to Fix
Chain kit €700-€1,200. Supercharger clutch repair €350-€700 (rebuild) or new pulley €600-€1,000. Many independents recommend ditching the supercharger if budget-limited (remap removes its operation) — power drops but reliability improves.
P2279 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P2279 mean on a SEAT?
P2279 stands for "Intake Air System Leak." This code means the engine computer detected an air leak in the intake system downstream of the mass airflow sensor (unmetered air entering the engine). Because this air is not measured, the engine may run lean, idle roughly, or behave inconsistently. The computer flags it when fuel trims or airflow readings indicate more air is reaching the cylinders than the sensor accounts for. It is usually not an immediate safety issue but can cause drivability problems, poor fuel economy, and other related lean codes. On SEAT it is documented across 1 model: Leon.
What are the most common causes of P2279?
The most common causes of P2279 are: Cracked or loose intake hose / air duct after the MAF, Vacuum leak (hoses, gaskets, PCV), Loose or damaged intake manifold gasket, Faulty or dirty mass airflow sensor, Leaking throttle body gasket, Unseated or cracked intake boot clamp, Failed PCV valve or hose. The specific cause varies by vehicle.
How much does it cost to fix P2279 on a SEAT?
Published repair estimates on SEAT range from $700 to $3,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P2279 on a different make?
View P2279 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.