AutoCodes – Nissan – P0118 2010 Nissan Sentra

P0118 2010 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 2010 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 6,908

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 2010 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 2010 Nissan Sentra - Engine Coolant Temperature Sensor Circuit High - AutoCodes.com — P0118 2010 Nissan Sentra Code - Engine Coolant Temperature Sensor Circuit High

What does this mean?

What are the Possible Causes of the DTC P0118 2010 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 2010 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 2010 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 2010 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 2010 Nissan Sentra Code

1. What are the common symptoms of OBDII code P0118 in a 2010 Nissan Sentra?

- Common symptoms include the engine overheating, inaccurate temperature gauge readings, poor fuel economy, and potential stalling or rough idling.

2. What does the OBDII code P0118 in a 2010 Nissan Sentra indicate?

- This code indicates a high voltage signal from the Engine Coolant Temperature (ECT) sensor circuit, suggesting a potential issue with the sensor or its wiring.

3. What are the possible causes of OBDII code P0118 in a 2010 Nissan Sentra?

- Possible causes include a faulty ECT sensor, a corroded or damaged connector or wiring related to the sensor, low engine coolant levels, or a malfunctioning engine control module (ECM).

4. How can I diagnose the OBDII code P0118 in my 2010 Nissan Sentra?

- Diagnosis involves checking the ECT sensor and its wiring for any visible damage, testing the sensor's resistance, inspecting the coolant levels, and using a scan tool to monitor live data for temperature readings.

5. Can I still drive my 2010 Nissan Sentra with the OBDII code P0118?

- It's not recommended to drive the vehicle with this code present, as it can lead to potential engine damage due to overheating or incorrect temperature readings.

6. How do I repair OBDII code P0118 in a 2010 Nissan Sentra?

- Repair typically involves replacing the Engine Coolant Temperature sensor if faulty, repairing or replacing damaged wiring or connectors, ensuring proper coolant levels, and clearing the error code.

7. Is it safe to reset the OBDII code P0118 in a 2010 Nissan Sentra without fixing the underlying issue?

- While you can reset the code to clear the Check Engine Light temporarily, it's essential to address the root cause to prevent potential engine problems in the future.

8. Can a DIY enthusiast fix the OBDII code P0118 in a 2010 Nissan Sentra?

- Depending on your experience and tools, DIY enthusiasts can often replace the ECT sensor or repair wiring themselves. However, if unsure, it's best to consult a professional mechanic.

9. How much does it typically cost to repair OBDII code P0118 in a 2010 Nissan Sentra at a mechanic?

- The cost can vary based on the exact cause of the issue, but replacing the ECT sensor can range from $100 to $200, while addressing wiring or ECM problems may increase the total cost.

10. How often does OBDII code P0118 occur in a 2010 Nissan Sentra?

- While not extremely common, issues with the ECT sensor or circuit can arise over time due to sensor wear, wiring degradation, or other factors, necessitating attention when the code appears.