Powertrain
generic / SAE
P2173
High Airflow/Vacuum Leak Detected (Slow Accumulation)
Long-term fuel and air adaptation values indicate a slow but continuous excess of air entering the engine. The ECU concludes that an unmetered air leak is gradually growing in the intake system.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number1 / 73
Possible causes
- Cracked vacuum hose or intake gasket high
- Dirty mass airflow sensor medium
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 50–400 €
- Estimated time: 0.5–2.5 h
- Component: intake manifold gasket
- Component: vacuum hoses
- Component: throttle body
- Component: mass air flow sensor
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012