AutoCodes – Land Rover – P1118 Land Rover

P1118 Land Rover Code - Thermostat Monitoring Sensor Open Circuit Or Short Circuit To Battery

Quick Answer

P1118 Land Rover indicates Thermostat Monitoring Sensor Open Circuit Or Short Circuit To Battery. Common causes include Low Engine Coolant Level, Faulty Engine Coolant Thermostat, Faulty Engine Coolant Temperature (ECT) 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: P1118 Land Rover indicates Thermostat Monitoring Sensor Open Circuit Or Short Circuit To Battery.
Common causes: Common causes include Low Engine Coolant Level, Faulty Engine Coolant Thermostat, Faulty Engine Coolant Temperature (ECT) 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 4,258

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 May 11, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1118 Land Rover Description

OBDII Code P1118 Land Rover - Thermostat Monitoring Sensor Open Circuit Or Short Circuit To Battery - AutoCodes.com — P1118 Land Rover Code - Thermostat Monitoring Sensor Open Circuit Or Short Circuit To Battery

What does this mean?

What are the Possible Causes of the DTC P1118 Land Rover?

Low Engine Coolant Level
Faulty Engine Coolant Thermostat
Faulty Engine Coolant Temperature (ECT) sensor
Engine Coolant Temperature (ECT) sensor harness is open or shorted
Engine Coolant Temperature (ECT) sensor electrical circuit poor connection

How to Fix the DTC P1118 Land Rover?

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 P1118 Land Rover 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 P1118 Land Rover code?

Need more information on how to fix the P1118 Land Rover code? Get Access to Factory Service Manuals

Need Help with the 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 P1118 Land Rover Code

1. What are the common symptoms of OBDII code P1118 in a Land Rover?

The common symptoms of code P1118 include engine overheating, fluctuating temperature gauge readings, and potential engine performance issues.

2. What does the OBDII code P1118 indicate in a Land Rover?

Code P1118 indicates a malfunction in the thermostat monitoring sensor circuit, specifically an open circuit or a short circuit to the battery.

3. What are the possible causes of OBDII code P1118 in a Land Rover?

Possible causes of code P1118 include a faulty thermostat monitoring sensor, damaged wiring or connectors in the sensor circuit, or a short circuit to the battery.

4. How can I diagnose the OBDII code P1118 in my Land Rover?

Diagnosing code P1118 involves inspecting the thermostat monitoring sensor, checking the sensor circuit for continuity, and testing for any short circuits or damaged wiring.

5. Can I drive my Land Rover with OBDII code P1118?

It is not recommended to drive your Land Rover with code P1118, as it can lead to engine overheating and potential damage. It is best to address the issue promptly.

6. How can I repair OBDII code P1118 in my Land Rover?

To repair code P1118, you may need to replace the thermostat monitoring sensor, repair any damaged wiring or connectors, and clear the error code using an OBDII scanner.

7. Is OBDII code P1118 a serious issue in a Land Rover?

Code P1118 should be addressed promptly to prevent engine overheating and potential damage. Ignoring this code can lead to more severe issues with the engine.

8. Can a DIY enthusiast fix OBDII code P1118 in a Land Rover?

Depending on your skill level and access to tools, you may be able to address code P1118 yourself by replacing the sensor and conducting basic wiring repairs.

9. How much does it cost to repair OBDII code P1118 in a Land Rover?

The cost of repairing code P1118 can vary depending on the extent of the issue, the need for replacement parts, and whether you choose to do the repair yourself or seek professional help.

10. How can I prevent OBDII code P1118 from recurring in my Land Rover?

To prevent code P1118 from recurring, it's essential to ensure proper maintenance of the cooling system, including regular checks on the thermostat monitoring sensor and related components.