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P0117 2018 Ford F150 Code - Engine Coolant Temperature Sensor 1 Circuit Low

Quick Answer

The P0117 diagnostic trouble code (DTC) for a 2018 Ford F150 indicates a problem with the Engine Coolant Temperature (ECT) Sensor 1 Circuit registering a low voltage. Common causes include Faulty Engine Coolant Temperature (ECT) sensor, Damaged wiring or connectors in the ECT sensor circuit, Corrosion or contamination in the sensor connections. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0117 2018 Ford F150 indicates Engine Coolant Temperature Sensor 1 Circuit Low.
Common causes
Common causes include Faulty Engine Coolant Temperature (ECT) sensor, Damaged wiring or connectors in the ECT sensor circuit, Corrosion or contamination in the sensor connections.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P0117 2018 Ford F150 Description

The P0117 diagnostic trouble code (DTC) for a 2018 Ford F150 indicates a problem with the Engine Coolant Temperature (ECT) Sensor 1 Circuit registering a low voltage. The ECT sensor is a crucial component that monitors the temperature of the engine coolant. This information is essential for the engine control module (ECM) to adjust fuel delivery and ignition timing, ensuring optimal performance and efficiency. When the ECT sensor circuit reports a low voltage, it can lead to various issues affecting the vehicle's performance.

OBDII Code P0117 2018 Ford F150 - Engine Coolant Temperature Sensor 1 Circuit Low
P0117 2018 Ford F150 Code - Engine Coolant Temperature Sensor 1 Circuit Low

Common Causes of P0117 2018 Ford F150

  1. Faulty Engine Coolant Temperature (ECT) sensor.
  2. Damaged wiring or connectors in the ECT sensor circuit.
  3. Corrosion or contamination in the sensor connections.
  4. ECM malfunction affecting ECT sensor readings.
  5. Coolant leaks leading to inaccurate temperature readings.

Symptoms of P0117 2018 Ford F150

  1. Check engine light illuminated on the dashboard.
  2. Engine running hotter or colder than usual.
  3. Poor fuel economy.
  4. Rough idling or stalling.
  5. Difficulty starting the engine, especially in cold weather.

How to Fix P0117 2018 Ford F150

  1. Begin by locating the ECT sensor on the engine (consult the vehicle's service manual if needed).
  2. Inspect the wiring and connectors for any damage or corrosion. Repair or replace as necessary.
  3. Test the ECT sensor using a multimeter to check for proper resistance values.
  4. If the sensor is faulty, replace it with a new one compatible with the vehicle.
  5. Clear the diagnostic trouble codes using an OBD-II scanner and monitor the vehicle's performance to ensure the issue is resolved.

Cost to Fix P0117 2018 Ford F150

The cost of repairing a P0117 code on a 2018 Ford F150 can vary depending on the specific cause of the issue. In general, the price range for parts such as a new ECT sensor can be between $20 and $100. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair time varying based on the complexity of the issue. Therefore, the total repair cost could range from $100 to $300 or more, including parts and labor. It is advisable to consult with a trusted mechanic or dealership for a more accurate estimate based on your location and vehicle specifics.

What does this mean?

Tech Notes for P0117 2018 Ford F150

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

Need more information about the P0117 2018 Ford F150 code?

Need more information on how to fix the P0117 2018 Ford F150 code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0117 2018 Ford F150 Code

1. What are the common symptoms of OBDII code P0117 in a 2018 Ford F150?

The common symptoms include inaccurate temperature gauge readings, engine overheating, poor fuel economy, and potential stalling or rough idling.

2. What are the possible causes of the Engine Coolant Temperature Sensor 1 Circuit Low code in a 2018 Ford F150?

Potential causes of P0117 in a 2018 Ford F150 include a faulty engine coolant temperature sensor, damaged wiring or connectors, low coolant levels, or a malfunctioning engine control module.

3. How can I diagnose the P0117 code in my 2018 Ford F150?

Diagnosing the code involves using an OBDII scanner to retrieve the code, checking the coolant level, inspecting the sensor and its wiring for damage, and testing the sensor's resistance with a multimeter.

4. What are the repair options for fixing the P0117 code in a 2018 Ford F150?

Repair options may include replacing the engine coolant temperature sensor, repairing or replacing damaged wiring or connectors, ensuring proper coolant levels, or reprogramming the engine control module if necessary.

5. Can I continue driving my 2018 Ford F150 with the P0117 code present?

It is not recommended to drive your vehicle with the P0117 code as it can lead to engine overheating, poor performance, and potential damage. Prompt diagnosis and repair are advisable.

6. How much does it typically cost to repair the P0117 code in a 2018 Ford F150?

The cost of repairing the P0117 code can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

7. Can I reset the OBDII code P0117 in my 2018 Ford F150 without fixing the underlying issue?

Resetting the code without addressing the underlying problem will only temporarily clear the error code. The issue will likely resurface, and it is crucial to diagnose and repair the root cause.

8. Will the P0117 code affect my 2018 Ford F150's emissions or overall performance?

Yes, the P0117 code can impact your vehicle's emissions and performance by causing incorrect fuel mixture, potential overheating, and other drivability issues.

9. Is the Engine Coolant Temperature Sensor 1 Circuit Low code a common problem in 2018 Ford F150 vehicles?

While not extremely common, the P0117 code can occur in 2018 Ford F150 models due to sensor failures, wiring issues, or other related factors.

10. Can a DIY enthusiast with basic automotive knowledge repair the P0117 code in a 2018 Ford F150?

Depending on the specific cause, a DIY enthusiast may be able to address the P0117 code by replacing the coolant temperature sensor or checking for obvious wiring issues. However, more complex diagnostics and repairs may require professional assistance.

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