DTC P1117: Engine Coolant Temperature (ECT) Sensor Intermittent
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
P1117 - ENGINE COOLANT TEMPERATURE (ECT) SENSOR INTERMITTENT
| Description: | Indicates the ECT circuit became intermittently open or shorted while the engine was running. Note: On vehicles that are not equipped with an ECT sensor, the cylinder head temperature (CHT) sensor can set this DTC. | ||
| Possible Causes: |
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| Diagnostic Aids: | Monitor the ECT on a diagnostic 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 |
| Vehicles with only a cylinder head temperature (CHT) sensor | - | - | GO to DL: Cylinder Head Temperature (CHT) Sensor STEP DL14. |
| Vehicles with only an engine coolant temperature (ECT) sensor | - | - | GO to DX: Engine Coolant Temperature (ECT) Sensor STEP DX15. |
| Vehicles with both a CHT and an ECT sensor | - | - | GO to DX: Engine Coolant Temperature (ECT) Sensor STEP DX15. |