OBD-II code · Powertrain (generic, extended)
P2279 Intake Air System Leak
The ECU has detected a discrepancy between commanded throttle/intake conditions and the resulting MAP/MAF that points to unmetered air entering after the throttle body. On turbocharged engines this often means a cracked or disconnected boost pipe between turbo and intake; on naturally aspirated engines, a hole in the intake manifold or hose.
Is it safe to drive with P2279?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyBoost pipe disconnected or cracked
- Most likelyIntake hose split
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–2.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Intake Manifold, Intercooler Pipe, Throttle Body
Related codes
- P2276O2 Sensor Signal Biased/Stuck Lean (Bank 2 Sensor 3)
- P2277O2 Sensor Signal Biased/Stuck Rich (Bank 2 Sensor 3)
- P2278O2 Sensor Signals Swapped Bank 1 Sensor 3 / Bank 2 Sensor 3
- P227ABarometric Pressure Sensor C Circuit
- P227BBarometric Pressure Sensor C Circuit Range/Performance
- P227CBarometric Pressure Sensor C Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.