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Home >> Infiniti >> 2012 >> FX50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 104 (Transfer Case) >> DTC/Circuit Diagnosis >> DTC P1804: Transfer Control Unit >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

WARNING: This page is about a different car, the 2011 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTION LOGIC

DTC Display item Malfunction detected condition Possible cause
P1804 CONTROL UNIT 3 Malfunction has occurred inside AWD control unit. Malfunction is detected in the memory (EEPROM) system of transfer control unit.