P0118 Lincoln 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 Lincoln 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 Lincoln 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 Lincoln?
- 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 Lincoln?
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 Lincoln 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 Lincoln Code
1. What are some common symptoms of OBDII code P0118 in a Lincoln?
- Common symptoms include the engine running hot or cold, poor fuel economy, rough idling, and the Check Engine light being illuminated.
2. What is the main cause of OBDII code P0118 in a Lincoln?
- The main cause is typically a faulty Engine Coolant Temperature (ECT) sensor or a problem with the ECT sensor circuit.
3. How can I diagnose the issue causing OBDII code P0118 in my Lincoln?
- To diagnose the issue, you can use a multimeter to test the ECT sensor's resistance, check the wiring harness for damage, and ensure the sensor is receiving proper voltage.
4. Can a faulty thermostat cause OBDII code P0118 in a Lincoln?
- Yes, a faulty thermostat can cause this code to be triggered if it leads to inaccurate coolant temperature readings by the ECT sensor.
5. What are some repair tips for addressing OBDII code P0118 in a Lincoln?
- Repair tips include replacing the ECT sensor, checking and repairing any damaged wiring, ensuring proper coolant levels, and testing the thermostat.
6. Is it safe to continue driving my Lincoln with OBDII code P0118?
- It is not recommended to continue driving with this code as it can lead to potential engine damage due to incorrect temperature readings.
7. Can a dirty or corroded ECT sensor connector cause OBDII code P0118?
- Yes, a dirty or corroded ECT sensor connector can cause poor electrical contact, leading to faulty temperature readings and triggering the code.
8. How do I reset the Check Engine light after addressing OBDII code P0118 in my Lincoln?
- You can reset the Check Engine light using an OBDII scanner tool or by disconnecting the car's battery for a few minutes.
9. Are there any recalls related to OBDII code P0118 in Lincoln vehicles?
- It's essential to check with your local Lincoln dealership or the National Highway Traffic Safety Administration (NHTSA) for any recalls related to this code in your specific model.
10. Can a malfunctioning cooling fan cause OBDII code P0118 in a Lincoln?
- Yes, a malfunctioning cooling fan can cause the engine to run hot, which may trigger the code if the ECT sensor detects abnormally high temperatures.
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