FixVault

DTC Detection Logic

DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
P0117 ECT SEN/CIRC
(Engine coolant temperature sensor circuit low input)
An excessively low voltage from the sensor is sent to ECM.
  • Harness or connectors

    (The engine coolant temperature sensor circuit is open or shorted.)

  • Engine coolant temperature sensor
P0118 ECT SEN/CIRC
(Engine coolant temperature sensor circuit high input)
An excessively high voltage from the sensor is sent to ECM.