Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number2 / 79
Possible causes
- Boost pipe disconnected or cracked high
- Intake hose split high
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 20–400 €
- Estimated time: 0.3–2.5 h
- Component: intake manifold
- Component: intercooler pipe
- Component: throttle body
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012