LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Nissan-Datsun >> 2011 >> Maxima SV >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U0101 Through P0152 >> DTC P0111: IAT Sensor >> DTC Logic >> DTC Detection Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Detection Logic

DTC DETECTION LOGIC CHART

DTC No. Trouble diagnosis (Trouble diagnosis content) DTC detecting condition Possible cause
P0111 IAT SENSOR 1 B1
[Intake air temperature (IAT) sensor circuit range/performance]
The comparison result of signals transmitted to ECM from each temperature sensor (IAT sensor, ECT sensor, and FTT sensor) shows that the voltage signal of the IAT sensor is higher/lower than that of other temperature sensors when the engine is started with its cold state.
  • Harness or connectors

    (High or low resistance in the IAT sensor circuit)

  • IAT sensor