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Home >> Nissan-Datsun >> 2014 >> Sentra S, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) >> DTC/Circuit Diagnosis >> DTC P0127: IAT Sensor >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause
P0127 IAT SENSOR-B1
(Intake air temperature too high)
Rationally incorrect voltage from the sensor is sent to ECM, compared with the voltage signal from engine coolant temperature sensor.
  • Harness or connectors (Intake air temperature sensor circuit is open or shorted)
  • Intake air temperature sensor