Code result
P043F
EVAP System Leak Detection Reference Orifice High Flow
Moderate severity
What it means
During the leak-detection self-test, airflow through the reference orifice is above the expected rate — typically a leak around the orifice or a damaged seal.
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
Leak at orifice or seal
highOne of the most commonly reported causes for this code — check this first.
Related help
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