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BMW
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2012
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335i 2D Convertible, Automatic Trans
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Repair and Diagnosis
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Engine Performance
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System
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Self Diagnosis - N55 - Diagnostic Trouble Codes - DTC P0478 (BMW DTC 138101) Through DTC P0440 (BMW DTC 191D01)
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DTC P0444; BMW DTC 191004: Tank-venting valve, activation: open circuit
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Fault description
Fault description
The diagnostic function monitors the control wire to the EVAP valve for an open circuit.