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Home >> Infiniti >> 2013 >> FX37 Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Automatic Transmission) >> DTC/Circuit Diagnosis >> DTC P0730: Incorrect Gear Ratio >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2013 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.
DTC Trouble diagnosis name DTC is detected if... Possible cause
P0730 Incorrect Gear Ratio The revolution of under drive sun gear is 8, 000 rpm or more.
NOTE: Not detected when in "P" or "N" position and during a shift to "P" or "N" position.
  • 2346 brake solenoid valve
  • Front brake solenoid valve
  • Input speed sensor 1, 2