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Home >> Infiniti >> 2019 >> QX80 Luxe, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission (DTCS) >> Transmission (TCM) >> DTC P1815: M-Mode Switch >> DTC Description >> DTC Detection Logic

DTC Detection Logic

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P1815

Manual Mode Switch Circuit

TCM monitors manual mode, non manual mode, up or down switch signal, and detects as irregular when impossible input pattern occurs 2 second or more.

  • Harness or connectors

    (These switches circuit is open or shorted.)

  • Manual mode switch