P0118 2020 Ford F150 Code - Engine Coolant Temperature Sensor 1 Circuit High
Quick Answer
The Engine Coolant Temperature (ECT) Sensor is a thermistor device in which resistance changes with temperature. Common causes include Low engine coolant level, Faulty Engine Coolant Temperature (ECT) Sensor, Faulty engine coolant thermostat. 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 2020 Ford F150 indicates Engine Coolant Temperature Sensor 1 Circuit High.
- Common causes
- Common causes include Low engine coolant level, Faulty Engine Coolant Temperature (ECT) Sensor, Faulty engine coolant thermostat.
- 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.
Code P0118 2020 Ford F150 Description
Thermistor-type sensors are considered passive sensors. A passive sensor is connected to a voltage divider network so varying the resistance of the passive sensor causes a variation in total current flow. The voltage that is dropped across a fixed resistor (pull-up resister) in series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.
The ECT Sensor is located in an engine coolant passage and measures the engine coolant temperature. The PCM uses the engine coolant temperature input for fuel control and for cooling fan control. The ECT Sensor can be a threaded or twist lock type.
This Diagnostic Trouble Code (DTC) is set when the ECT Sensor signal is greater than the self-test maximum. The ECT Sensor signal maximum is -50° C (-58° F).
What are the Possible Causes of the DTC P0118 2020 Ford F150?
- Low engine coolant level
- Faulty Engine Coolant Temperature (ECT) Sensor
- Faulty engine coolant thermostat
- Engine Coolant Temperature Sensor harness is open or shorted
- Engine Coolant Temperature Sensor circuit poor electrical connection
How to Fix the DTC P0118 2020 Ford F150?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0118 2020 Ford F150 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0118 2020 Ford F150 Code
1. What does OBDII code P0118 on a 2020 Ford F150 indicate?
The code P0118 on a 2020 Ford F150 indicates a problem with the Engine Coolant Temperature Sensor 1 Circuit reading a high voltage.
2. What are the common symptoms of a faulty Engine Coolant Temperature Sensor on a 2020 Ford F150?
Common symptoms of a faulty Engine Coolant Temperature Sensor on a 2020 Ford F150 include issues with engine performance, poor fuel economy, rough idling, and potential overheating.
3. What are the possible causes of the Engine Coolant Temperature Sensor 1 Circuit High code on a 2020 Ford F150?
Common causes of the P0118 code on a 2020 Ford F150 include a faulty temperature sensor, a wiring issue, a corroded connector, or a problem with the engine's coolant system.
4. How can I diagnose the issue causing the P0118 code on my 2020 Ford F150?
To diagnose the issue causing the P0118 code, you can use a scan tool to read the live data from the coolant temperature sensor, visually inspect the sensor and its wiring for any damage, and test the sensor's resistance with a multimeter.
5. Can I still drive my 2020 Ford F150 with the Engine Coolant Temperature Sensor 1 Circuit High code?
It is not recommended to drive your 2020 Ford F150 with the P0118 code as it can lead to engine performance issues and potential overheating problems. It's best to address the issue promptly.
6. How can I repair the Engine Coolant Temperature Sensor 1 Circuit High code on my 2020 Ford F150?
Repairing the P0118 code on your 2020 Ford F150 may involve replacing the faulty coolant temperature sensor, repairing or replacing damaged wiring, cleaning the connector, or addressing any coolant system issues.
7. Will resetting the OBDII codes make the P0118 code go away on my 2020 Ford F150?
Resetting the OBDII codes may temporarily clear the P0118 code, but if the underlying issue causing the code is not addressed, it is likely to reappear after some driving cycles.
8. How much does it typically cost to fix the Engine Coolant Temperature Sensor issue on a 2020 Ford F150?
The cost to fix the Engine Coolant Temperature Sensor issue on a 2020 Ford F150 can vary depending on the exact cause of the problem, but it may range from $100 to $300 for parts and labor.
9. Can a DIY enthusiast replace the Engine Coolant Temperature Sensor on a 2020 Ford F150?
Replacing the Engine Coolant Temperature Sensor on a 2020 Ford F150 can be a DIY-friendly task for those with some mechanical experience and the right tools. However, if unsure, it's best to consult a professional mechanic.
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