Audi
VW group engines see an intake air leak. On 2.0 TFSI/TSI the crankcase breather valve is a common cause.
P2279 fault code: what it means
P2279: Intake air system leak; unmetered air is getting into the engine.
Usual causes, most likely first
- split intake hose between MAF and throttle body
- failed PCV valve or split PCV hose
- leaking intake manifold gasket
- cracked vacuum line
P2279 by make
Skoda
VW group engines see an intake air leak. On 2.0 TFSI/TSI the crankcase breather valve is a common cause.
Volkswagen
VW group engines see an intake air leak. On 2.0 TFSI/TSI the crankcase breather valve is a common cause.
What the repair usually costs
- Throttle body clean and idle relearnNZ$90–NZ$190 · A$100–A$200
- Electronic throttle body replaceNZ$470–NZ$1,290 · A$440–A$1,190
- PCV valve / oil separator replacementNZ$110–NZ$920 · A$110–A$900
Not sure what P2279 means on your car? Ask Credov.
Before you clear it
Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.
Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.