Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
Start by checking for coolant leaks, if there are not leaks the thermostat might be stuck open or closed and may need to be replaced, you still have an issue the engine coolant temp sensor or cylinder head temp sensor.
To diagnose the P0116 2009 Ford Fusion code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
Coolant temperature signal sent to the Engine Control Module (ECM) is not within specified range.
Indicates the engine coolant temperature rationality test has failed. This DTC indicates that the ECT or cylinder head temperature (CHT) value is higher than the calibrated value and could prevent one or more on-board diagnostic (OBD) monitors from completing. The Powertrain Control Module (PCM) runs this logic after an engine off and a calibrated soak period(typically 6 hours). This soak period allows the intake air temperature (IAT) and the CHT or ECT to stabilize and not differ by more than a calibrated value. DTC P0116 sets when all of the following conditions are met: The ECT at engine start exceeds the IAT at engine start by more than a calibrated value, typically 17°C (30°F).
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