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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 P0117, P0118: ECT 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
P0117 ECT SEN/CIRC
(Engine coolant temperature sensor 1 circuit low)
An excessively low voltage from the engine coolant temperature sensor is sent to ECM.
  • Harness or connectors (Engine coolant temperature sensor circuit is open or shorted.)
  • Engine coolant temperature sensor
P0118 ECT SEN/CIRC
(Engine coolant temperature sensor 1 circuit high)
An excessively high voltage from the engine coolant temperature sensor is sent to ECM.