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Home >> BMW >> 2014 >> 740Li >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Self Diagnosis - Diagnostic Trouble Codes (N55) >> Fault Code Tests >> DTC P1406: BMW DTC 194301; DME -- Internal EVAP System Leak Detection Module Error >> Fault description

Fault description

The diagnosis is monitoring the voltage supply of the Natural Vacuum Leak Detection (NVLD).

Malfunction monitoring conditions

The fault is detected when the voltage supply of NVLD drops below a limit value or is interrupted.