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Home >> Infiniti >> 2010 >> M45 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1550 To P2A03 >> DTC P1805 Brake Switch >> On Board Diagnosis Logic

On Board Diagnosis Logic

The MIL will not illuminate for this diagnosis  .

DTC DETECTING CONDITION CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1805
1805
Brake switch A brake switch signal is not sent to ECM for extremely long time while the vehicle is being driven.
  • Harness or connectors

    (Stop lamp switch circuit is open or shorted.)

  • Stop lamp switch