AutoCodes – Jaguar – P0118 Jaguar

P0118 Jaguar Code - Engine Coolant Temperature Circuit High Input

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 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 Jaguar indicates Engine Coolant Temperature Circuit High Input.
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.

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Code Popularity 11,701

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 Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0118 Jaguar Description

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM 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.

OBDII Code P0118 Jaguar - Engine Coolant Temperature Circuit High Input - AutoCodes.com — P0118 Jaguar Code - Engine Coolant Temperature Circuit High Input

What does this mean?

What are the Possible Causes of the DTC P0118 Jaguar?

Low engine coolant level
Faulty Engine Coolant Temperature (ECT) sensor
Faulty engine coolant thermostat
Engine Coolant Temperature (ECT) sensor harness is open or shorted
Engine Coolant Temperature (ECT) sensor electrical circuit poor connection

How to Fix the DTC P0118 Jaguar?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0118 Jaguar 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.

Need more information about the P0118 Jaguar code?

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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 Jaguar Code

1. What are the common symptoms of OBDII code P0118 in a Jaguar?

- Common symptoms include engine overheating, a malfunctioning temperature gauge, poor fuel economy, and potential stalling or rough idling.

2. What are the possible causes of the P0118 code in a Jaguar?

- The code P0118 in a Jaguar can be triggered by a faulty engine coolant temperature sensor, a corroded or damaged wiring harness, low coolant levels, or a malfunctioning cooling fan.

3. How can I diagnose the cause of the P0118 code in my Jaguar?

- To diagnose the P0118 code, you can start by checking the coolant level, inspecting the wiring harness for damage, testing the engine coolant temperature sensor, and verifying proper operation of the cooling fan.

4. Can a faulty thermostat cause the P0118 code in a Jaguar?

- Yes, a faulty thermostat can lead to the P0118 code as it can affect the engine coolant temperature readings, causing the sensor to detect a high input.

5. How do I repair the P0118 code in my Jaguar?

- Repairing the P0118 code may involve replacing the engine coolant temperature sensor, repairing or replacing damaged wiring, ensuring proper coolant levels, and addressing any cooling system issues.

6. Is it safe to continue driving with the P0118 code in my Jaguar?

- It is not recommended to drive with the P0118 code as it can lead to engine overheating and potential damage. It is best to address the issue promptly to prevent further problems.

7. Can a DIY enthusiast fix the P0118 code in a Jaguar?

- Depending on your skills and tools, some DIY enthusiasts may be able to address the P0118 code by replacing the engine coolant temperature sensor or repairing wiring issues. However, complex diagnostics may require professional help.

8. Will resetting the OBDII code make the P0118 issue go away?

- Resetting the code without addressing the underlying issue will not solve the P0118 problem. It is important to diagnose and fix the root cause of the code for a lasting solution.

9. How long does it typically take to repair the P0118 code in a Jaguar?

- The time to repair the P0118 code can vary based on the exact cause of the issue. Simple fixes like sensor replacement may take less time, while diagnosing wiring problems or cooling system issues can be more time-consuming.

10. Can extreme weather conditions trigger the P0118 code in a Jaguar?

- Extreme weather conditions, such as very high or low temperatures, can potentially impact the engine coolant temperature readings and lead to the triggering of the P0118 code in a Jaguar.