AutoCodes – Nissan – P0118 2007 Nissan Sentra

P0118 2007 Nissan Sentra 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 2007 Nissan Sentra 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 6,751

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 2007 Nissan Sentra 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 2007 Nissan Sentra - Engine Coolant Temperature Sensor Circuit High - AutoCodes.com — P0118 2007 Nissan Sentra Code - Engine Coolant Temperature Sensor Circuit High

What does this mean?

What are the Possible Causes of the DTC P0118 2007 Nissan Sentra?

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 2007 Nissan Sentra?

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

Check for coolant leaks first, if there are no leaks check to see if thermostat is opening and closing properly if its not replace thermostat if problem is still there coolant temperature sensor may need to be replaced.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0118 2007 Nissan Sentra 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 2007 Nissan Sentra 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 2007 Nissan Sentra Code

1. What are the common symptoms of OBDII code P0118 in a 2007 Nissan Sentra?

The common symptoms include the temperature gauge reading extremely high, engine overheating, poor fuel economy, and the Check Engine Light illuminating.

2. What does the OBDII code P0118 indicate in a 2007 Nissan Sentra?

The code P0118 indicates a problem with the Engine Coolant Temperature (ECT) sensor circuit registering a high voltage.

3. What are the possible causes of OBDII code P0118 in a 2007 Nissan Sentra?

Possible causes include a faulty ECT sensor, a short or open circuit in the sensor's wiring, a malfunctioning engine control module (ECM), or low engine coolant levels.

4. How can I diagnose the cause of OBDII code P0118 in my 2007 Nissan Sentra?

You can diagnose the issue by checking the ECT sensor's electrical connections, testing the sensor's resistance, inspecting the wiring for damage, and scanning the ECM for any related fault codes.

5. Can I drive my 2007 Nissan Sentra with OBDII code P0118?

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

6. Is it safe to reset the Check Engine Light after fixing OBDII code P0118 in my 2007 Nissan Sentra?

Yes, you can reset the Check Engine Light using an OBDII scanner after fixing the issue. If the problem is resolved, the light should not come back on.

7. How much does it typically cost to repair OBDII code P0118 in a 2007 Nissan Sentra?

The cost of repair can vary depending on the root cause of the issue. In general, replacing the ECT sensor can range from $50 to $200, while fixing wiring or ECM issues may cost more.

8. Can a DIY enthusiast fix OBDII code P0118 in a 2007 Nissan Sentra?

Yes, if you have the necessary tools and knowledge, you may be able to replace the ECT sensor or repair wiring issues yourself. However, diagnosing and fixing ECM problems may require professional assistance.

9. Will OBDII code P0118 cause my 2007 Nissan Sentra to fail an emissions test?

Yes, code P0118 can cause your vehicle to fail an emissions test as it indicates a problem with the engine coolant temperature sensor, which is essential for proper engine performance.

10. How important is it to address OBDII code P0118 promptly in a 2007 Nissan Sentra?

It is crucial to address code P0118 promptly to prevent engine damage, overheating, and potential safety hazards. Ignoring the issue can lead to more extensive and costly repairs in the future.