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P0118 2015 Ford F150 Code - Engine Coolant Temperature Sensor 1 Circuit High

Quick Answer

The P0118 code for a 2015 Ford F150 indicates a problem with the Engine Coolant Temperature (ECT) Sensor 1 Circuit being too high. Common causes include Faulty ECT sensor, Wiring issues in the ECT sensor circuit, Corroded or loose 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
P0118 2015 Ford F150 indicates Engine Coolant Temperature Sensor 1 Circuit High.
Common causes
Common causes include Faulty ECT sensor, Wiring issues in the ECT sensor circuit, Corroded or loose 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 16, 2024
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Code P0118 2015 Ford F150 Description

The P0118 code for a 2015 Ford F150 indicates a problem with the Engine Coolant Temperature (ECT) Sensor 1 Circuit being too high. The ECT sensor is a crucial component that monitors the temperature of the engine coolant and sends this information to the engine control module (ECM). The ECM uses this data to adjust fuel delivery and ignition timing for optimal engine performance and efficiency. When the ECT sensor circuit reads a high voltage, it means that the engine coolant temperature is higher than expected, which can lead to various issues.

OBDII Code P0118 2015 Ford F150 - Engine Coolant Temperature Sensor 1 Circuit High
P0118 2015 Ford F150 Code - Engine Coolant Temperature Sensor 1 Circuit High

Common Causes of P0118 2015 Ford F150

  1. Faulty ECT sensor
  2. Wiring issues in the ECT sensor circuit
  3. Corroded or loose connections
  4. ECM malfunction
  5. Coolant leaks or low coolant level

Symptoms of P0118 2015 Ford F150

  1. Check engine light illuminated
  2. Engine running hotter than normal
  3. Poor fuel efficiency
  4. Engine misfires or rough idle
  5. Reduced engine performance

How to Fix P0118 2015 Ford F150

  1. Begin by diagnosing the issue using a scan tool to verify the P0118 code and check the ECT sensor's readings.
  2. Inspect the ECT sensor and its wiring for any damage, corrosion, or loose connections. Replace or repair as necessary.
  3. Test the ECT sensor's resistance and voltage to ensure it is functioning correctly.
  4. Clear the code with a scan tool after making repairs and test drive the vehicle to ensure the issue is resolved.
  5. If the problem persists, further diagnostics may be required to identify any underlying issues with the ECM or coolant system.

Cost to Fix P0118 2015 Ford F150

The typical repair costs for addressing a P0118 code on a 2015 Ford F150 can range from $100 to $300, including parts and labor. However, specific costs can vary depending on the location, vehicle make and model, and the extent of the repairs needed. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your specific circumstances. Keep in mind that diagnosis time and labor rates can also impact the total cost of the repair.

What does this mean?

Tech Notes for P0118 2015 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.

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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 P0118 2015 Ford F150 Code

1. What are the common symptoms of OBDII code P0118 in a 2015 Ford F150?

The common symptoms of OBDII code P0118 in a 2015 Ford F150 include engine overheating, poor fuel economy, rough idling, and the Check Engine light illuminating on the dashboard.

2. What does the OBDII code P0118 indicate in a 2015 Ford F150?

OBDII code P0118 in a 2015 Ford F150 indicates a problem with the Engine Coolant Temperature (ECT) Sensor 1 Circuit registering a high voltage.

3. What are the possible causes of OBDII code P0118 in a 2015 Ford F150?

Possible causes of OBDII code P0118 in a 2015 Ford F150 include a faulty ECT sensor, a wiring issue in the ECT sensor circuit, a malfunctioning thermostat, or low coolant levels.

4. How can I diagnose the OBDII code P0118 in my 2015 Ford F150?

To diagnose OBDII code P0118 in a 2015 Ford F150, you can use an OBDII scanner to retrieve the code, visually inspect the ECT sensor and its wiring for any damage, test the ECT sensor's resistance, and check the coolant level and thermostat operation.

5. Can I drive my 2015 Ford F150 with OBDII code P0118?

It is not recommended to drive your 2015 Ford F150 with OBDII code P0118, as it can lead to engine overheating and potential damage. It is advisable to address the issue promptly.

6. How can I repair OBDII code P0118 in my 2015 Ford F150?

To repair OBDII code P0118 in a 2015 Ford F150, you may need to replace the Engine Coolant Temperature sensor, repair any damaged wiring in the circuit, check and replace the thermostat if necessary, and ensure the coolant level is adequate.

7. Is OBDII code P0118 a serious issue in a 2015 Ford F150?

OBDII code P0118 can be a serious issue in a 2015 Ford F150 if left unresolved, as it can lead to engine overheating, poor performance, and potential long-term damage. It is best to address this code promptly.

8. Can a DIY enthusiast fix OBDII code P0118 in a 2015 Ford F150?

A DIY enthusiast with the necessary tools and knowledge may be able to fix OBDII code P0118 in a 2015 Ford F150 by following repair guides and instructions specific to the ECT sensor and cooling system components.

9. How much does it cost to repair OBDII code P0118 in a 2015 Ford F150?

The cost to repair OBDII code P0118 in a 2015 Ford F150 can vary depending on the cause of the issue, labor costs, and parts needed. It is recommended to consult with a mechanic or dealership for an accurate estimate.

10. Can a faulty ECT sensor cause other problems in a 2015 Ford F150?

Yes, a faulty Engine Coolant Temperature (ECT) sensor in a 2015 Ford F150 can cause other problems such as incorrect temperature readings, engine overheating, poor fuel efficiency, and potential issues with the vehicle's emission system.

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