P0116 - Engine Coolant Temperature Sensor 1 Circuit Range/Performance
WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
P0116 - ENGINE COOLANT TEMPERATURE SENSOR 1 CIRCUIT RANGE/PERFORMANCE
| Description: | Indicates the engine coolant temperature rationality test has failed. The powertrain control module (PCM) logic that sets this DTC indicates the ECT or cylinder head temperature (CHT) drifted higher than the nominal sensor calibration curve and could prevent one or more on-board diagnostic (OBD) monitors from executing. The PCM runs this logic after an engine off calibrated soak period (typically 6 hours). This soak period allows the intake air temperature (IAT) and engine coolant temperature to stabilize and not differ by more than a calibrated value. |
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| Possible Causes: |
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| Diagnostic Aids: | Make sure the IAT and the engine coolant temperature are similar when the engine is cold. Also make sure the CHT sensor and the actual engine operating temperatures are the same. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | - | - | GO to PINPOINT TEST DL . |