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S4 Automatic DCT
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Repair and Diagnosis
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Different car
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Section 214 (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 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
ENABLE CONDITION REFERENCE CHART
Secondary Parameters
Enable Conditions
Engine speed
< 300 RPM
Vehicle speed
< 1 km/h (0.6 MPH)
After secondary air system stops
≥ 2976 ms