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P0117 1997 Ford F150 Code - Engine Coolant Temperature Sensor Circuit Low

- Code Popularity: 5,550 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P0117 1997 Ford F150?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Low engine coolant level
  • Faulty engine coolant thermostat
  • Faulty Engine Coolant Temperature (ECT) Sensor or Cylinder Head Temperature (CHT) Sensor
  • Engine Coolant Temperature Sensor or Cylinder Head Temperature Sensor harness is open or shorted
  • Engine Coolant Temperature Sensor or Cylinder Head Temperature Sensor circuit poor electrical connection
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How to Fix the DTC P0117 1997 Ford F150?

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.

Code Tech Notes

Start by checking for coolant leaks, and if there are no leaks, the thermostat might be stuck closed and needs replacement. If the problem persists, change the Engine Coolant Temperature (ECT) sensor.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0117 1997 Ford F150 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.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P0117 1997 Ford F150 Description

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Powertrain Control Module (PCM). The modified signal returns to the PCM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases. The Diagnostic Trouble Code (DTC) indicates the sensor signal is greater than the self-test maximum. The ECT sensor minimum is 0.2 volts or 121°C (250°F).

OBDII Code P0117 1997 Ford F150 - Engine Coolant Temperature Sensor Circuit Low - AutoCodes.com
P0117 1997 Ford F150 Code - Engine Coolant Temperature Sensor Circuit Low

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