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Legacy Premium, Automatic CVT Trans
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Repair and Diagnosis
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Section 50 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC))
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Diagnostic Trouble Code (DTC) Detecting Criteria
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DTC P2431 Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance
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Enable Condition
Enable Condition
WARNING:
This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
ENABLE CONDITION
Secondary Parameters
Enable Conditions
Engine speed
< 300 rpm
Vehicle speed
< 1 km/h (0.6 MPH)
After secondary air system stops
≥ 2976 ms