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Home >> Nissan-Datsun >> 2017 >> Maxima SL >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTCS) (2 Of 4) >> DTC/Circuit Diagnosis >> DTC P0181: FTT Sensor >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

  1. Rationally incorrect voltage from the sensor is sent to ECM, compared with the voltage signals from ECT sensor and intake air temperature sensor.
  2. The comparison result of signals transmitted to ECM from each temperature sensor (IAT sensor, ECT sensor, EOT sensor, and FTT sensor) shows that the voltage signal of the FTT sensor is higher/lower than that of other temperature sensors when the engine is started with its cold state.
DTC CONSULT screen terms
(Trouble diagnosis content)		 DTC detection condition
P0181 FTT SENSOR
(Fuel temperature sensor a circuit range/performance)		 1 Diagnosis condition -
Signal (terminal) Voltage signal transmitted from FTT sensor to ECM
Threshold Rationally incorrect voltage from the sensor is sent to ECM, compared with the voltage signals from ECT sensor and intake air temperature sensor
Diagnosis delay time -
2 Diagnosis condition -
Signal (terminal) Voltage signal transmitted from FTT sensor to ECM
Threshold The comparison result of signals transmitted to ECM from each temperature sensor (IAT sensor, ECT sensor, EOT sensor, and FTT sensor) shows that the voltage signal of the FTT sensor is higher/lower than that of other temperature sensors when the engine is started with its cold state
Diagnosis delay time -
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