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2011
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Prius
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Repair and Diagnosis
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Engine Performance
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Engine Control System (Diagnostic Codes)
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SFI System
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DTC P0401: Exhaust Gas Recirculation Flow Insufficient Detected
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Typical Malfunction Thresholds
Typical Malfunction Thresholds
Manifold pressure change
Less than 1.0 kPa
At engine speed
1050 RPM