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Infiniti
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2012
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QX56 AWD
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Repair and Diagnosis
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Transmission
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Transfer Case
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DTC/Circuit Diagnosis
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DTC P1811: Power Supply Circuit For Transfer Control Unit
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DTC Logic
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DTC Detection Logic
DTC Detection Logic
DTC
Display item
Malfunction detected condition
Possible cause
P1811
BATTERY VOLTAGE
When transfer control unit power supply is lower or higher than normal
Malfunction of transfer control unit power supply circuit (open or short)