AutoCodes – Nissan – P0118 2008 Nissan Pathfinder

P0118 2008 Nissan Pathfinder 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 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 2008 Nissan Pathfinder indicates Engine Coolant Temperature Sensor 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.

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Code Popularity 7,761

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0118 2008 Nissan Pathfinder 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 2008 Nissan Pathfinder - Engine Coolant Temperature Sensor Circuit High - AutoCodes.com — P0118 2008 Nissan Pathfinder Code - Engine Coolant Temperature Sensor Circuit High

What does this mean?

What are the Possible Causes of the DTC P0118 2008 Nissan Pathfinder?

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 2008 Nissan Pathfinder?

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

If the coolant level is low, add coolant and reset the code. If the car is overheating the thermostat may have to be replaced. If the problem continues the engine coolant temperature (ECT) sensor.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0118 2008 Nissan Pathfinder 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 2008 Nissan Pathfinder 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 2008 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P0118 on a 2008 Nissan Pathfinder?

- Common symptoms include the engine running hotter or colder than normal, poor fuel economy, rough idling, and possibly an illuminated check engine light.

2. What does the OBDII code P0118 indicate for a 2008 Nissan Pathfinder?

- The code P0118 indicates a problem with the Engine Coolant Temperature (ECT) sensor circuit, specifically that the sensor is reading a high voltage signal.

3. What are the possible causes of the P0118 code on a 2008 Nissan Pathfinder?

- Possible causes include a faulty ECT sensor, a damaged ECT sensor connector or wiring, low coolant levels, a stuck-open thermostat, or a problem with the engine control module (ECM).

4. How can I diagnose the P0118 code on my 2008 Nissan Pathfinder?

- You can diagnose the P0118 code by checking the coolant level, visually inspecting the ECT sensor and its wiring for damage, testing the sensor's resistance, and using a scan tool to monitor live data.

5. Can I still drive my 2008 Nissan Pathfinder with the P0118 code?

- It is not recommended to drive your vehicle with the P0118 code as it can lead to potential engine damage or poor performance due to incorrect temperature readings.

6. How can I repair the P0118 code on my 2008 Nissan Pathfinder?

- Repair options include replacing the ECT sensor, repairing or replacing damaged wiring or connectors, ensuring proper coolant levels, and addressing any issues with the thermostat or ECM.

7. Is it possible to reset the P0118 code on a 2008 Nissan Pathfinder?

- Simply resetting the code with a scan tool may temporarily clear the check engine light, but the underlying issue causing the P0118 code will need to be identified and fixed to prevent it from reoccurring.

8. Can a DIY enthusiast repair the P0118 code on a 2008 Nissan Pathfinder?

- Depending on your skill level and access to tools, DIY enthusiasts can potentially repair the P0118 code by following diagnostic procedures, replacing the ECT sensor, and addressing related issues.

9. How important is it to fix the P0118 code promptly on a 2008 Nissan Pathfinder?

- It is crucial to address the P0118 code promptly to prevent potential engine damage, poor fuel efficiency, and performance issues that can arise from incorrect engine temperature readings.

10. Will fixing the P0118 code improve the overall performance of my 2008 Nissan Pathfinder?

- Yes, fixing the P0118 code can lead to improved engine performance, better fuel efficiency, smoother idling, and overall better driving experience by ensuring accurate temperature readings.