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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) >> DTC Diagnosis >> DTC P1117: - Engine Coolant Temperature (ECT) Sensor Circuit Intermittent

DTC P1117: - Engine Coolant Temperature (ECT) Sensor Circuit Intermittent

DTC P1117: - ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT INTERMITTENT

Description:  Indicates the ECT circuit became intermittently open or shorted while the engine was running.
Possible Causes: 
  • Damaged harness
  • Damaged sensor
  • Damaged harness connector
  • Low engine coolant
Diagnostic Aids:  Monitor the ECT on a scan tool. Look for sudden changes in the reading when the harness is wiggled or the sensor is tapped.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
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