AutoCodes – Ford – P0118 2000 Ford F150

P0118 2000 Ford F150 Code - Engine Coolant Temperature Sensor Circuit High

Quick Answer

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. Common causes include Low engine coolant level, Faulty engine coolant thermostat, Faulty Engine Coolant Temperature (ECT) Sensor or Cylinder Head Temperature (CHT) Sensor. 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 2000 Ford F150 indicates Engine Coolant Temperature Sensor Circuit High.
Common causes: Common causes include Low engine coolant level, Faulty engine coolant thermostat, Faulty Engine Coolant Temperature (ECT) Sensor or Cylinder Head Temperature (CHT) Sensor.
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.

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Code Popularity 5,959

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 02, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0118 2000 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 maximum is 4.6 volts or -50°C (-58°F).

OBDII Code P0118 2000 Ford F150 - Engine Coolant Temperature Sensor Circuit High - AutoCodes.com — P0118 2000 Ford F150 Code - Engine Coolant Temperature Sensor Circuit High

What does this mean?

What are the Possible Causes of the DTC P0118 2000 Ford F150?

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

How to Fix the DTC P0118 2000 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.

What does this mean?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0118 2000 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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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 2000 Ford F150 Code

1. What are the common symptoms of OBDII code P0118 on a 2000 Ford F150?

The common symptoms of OBDII code P0118 on a 2000 Ford F150 include a high temperature gauge reading, engine overheating, poor fuel economy, and potential issues with the heater.

2. What causes the Engine Coolant Temperature Sensor Circuit High code on a 2000 Ford F150?

The Engine Coolant Temperature Sensor Circuit High code on a 2000 Ford F150 is usually caused by a faulty engine coolant temperature sensor, a wiring issue in the sensor circuit, or a problem with the engine control module (ECM).

3. How can I diagnose the Engine Coolant Temperature Sensor Circuit High code on my 2000 Ford F150?

You can diagnose the Engine Coolant Temperature Sensor Circuit High code on your 2000 Ford F150 by using an OBDII scanner to read the code, checking the engine coolant temperature sensor for proper operation, inspecting the sensor wiring for damage, and testing the ECM for any faults.

4. Is it safe to drive my 2000 Ford F150 with the P0118 code?

It is not recommended to drive your 2000 Ford F150 with the P0118 code as it can lead to engine overheating, poor performance, and potential damage to the engine components. It is best to address the issue promptly.

5. How do I repair the Engine Coolant Temperature Sensor Circuit High code on my 2000 Ford F150?

To repair the Engine Coolant Temperature Sensor Circuit High code on your 2000 Ford F150, you may need to replace the engine coolant temperature sensor, repair any damaged wiring in the sensor circuit, or diagnose and resolve any ECM issues.

6. Can a faulty thermostat cause the P0118 code on a 2000 Ford F150?

Yes, a faulty thermostat can sometimes cause the P0118 code on a 2000 Ford F150. A malfunctioning thermostat can lead to incorrect temperature readings, which may trigger the P0118 code.

7. Will the P0118 code on a 2000 Ford F150 affect the vehicle's emissions?

Yes, the P0118 code on a 2000 Ford F150 can affect the vehicle's emissions by causing improper fuel mixture and combustion issues, leading to increased emissions output.

8. How much does it typically cost to repair the P0118 code on a 2000 Ford F150?

The cost to repair the P0118 code on a 2000 Ford F150 can vary depending on the root cause of the issue. On average, it may cost between $100 to $300 for parts and labor.

9. Can I reset the P0118 code on my 2000 Ford F150 without fixing the underlying issue?

While you can clear the P0118 code using an OBDII scanner, it is not recommended to do so without fixing the underlying issue. Resetting the code without addressing the problem may lead to continued engine issues and potential damage.

10. How long does it take to repair the P0118 code on a 2000 Ford F150?

The time it takes to repair the P0118 code on a 2000 Ford F150 can vary depending on the exact cause of the issue and the complexity of the repair. In general, it may take a few hours to a full day to diagnose and fix the problem.