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Home >> Infiniti >> 2012 >> M37 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Transfer Case) >> DTC/Circuit Diagnosis >> DTC P1801, P1811: Power Supply Circuit For Transfer Control Unit >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

WARNING: This page is about a different car, the 2013 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.
DTC CONSULT Diagnostic item is detected when...
P1801 POWER SUPPLY CIRCUIT FOR TRANSFERCONTROL UNIT  *INITIAL START* Due to removal of battery which cuts off power supply to transfer control unit, self-diagnosis memory function is suspended.
P1811 POWER SUPPLY CIRCUIT FOR TRANSFERCONTROL UNIT  BATTERY VOLTAGE Power supply voltage for transfer control unit is abnormally low while driving.