Code result
P2173
High Airflow/Vacuum Leak Detected
Moderate severity
What it means
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.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Cracked vacuum hose or intake gasket
highOne of the most commonly reported causes for this code — check this first.
Dirty mass airflow sensor
mediumA plausible cause — test and verify before replacing parts.
Related help
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