AutoCodes – Nissan – P0118 2011 Nissan Sentra

P0118 2011 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 2011 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 5,879

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 2011 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 2011 Nissan Sentra - Engine Coolant Temperature Sensor Circuit High - AutoCodes.com — P0118 2011 Nissan Sentra Code - Engine Coolant Temperature Sensor Circuit High

What does this mean?

What are the Possible Causes of the DTC P0118 2011 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 2011 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 2011 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 2011 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 2011 Nissan Sentra Code

1. What are the common symptoms of OBDII code P0118 in a 2011 Nissan Sentra?

- Common symptoms include the engine running hot or cold, poor fuel economy, rough idling, and potential issues with the vehicle's heater.

2. What does the OBDII code P0118 indicate in a 2011 Nissan Sentra?

- This code indicates a problem with the Engine Coolant Temperature (ECT) sensor circuit reading a high voltage, which can affect the engine's performance.

3. What are the possible causes of OBDII code P0118 in a 2011 Nissan Sentra?

- The possible causes include a faulty ECT sensor, a short or open circuit in the sensor wiring, a malfunctioning thermostat, or issues with the engine control module (ECM).

4. How can I diagnose the OBDII code P0118 in my 2011 Nissan Sentra?

- To diagnose this code, you can use a scan tool to check the ECT sensor readings, inspect the sensor and its wiring for damage, and test the thermostat for proper operation.

5. Can I still drive my 2011 Nissan Sentra with OBDII code P0118?

- It is not recommended to drive the vehicle with this code present, as it can lead to engine overheating or other potential issues that may cause further damage.

6. How can I repair OBDII code P0118 in my 2011 Nissan Sentra?

- Repairing this code typically involves replacing the faulty ECT sensor, repairing any damaged wiring, ensuring the thermostat is functioning correctly, and clearing the code from the ECM.

7. Is it possible to reset OBDII code P0118 in a 2011 Nissan Sentra without repairs?

- While you can clear the code temporarily, it is important to address the underlying issue causing the code to prevent further problems with your vehicle.

8. Can a DIY enthusiast fix OBDII code P0118 in a 2011 Nissan Sentra?

- Depending on your skill level and access to tools, you may be able to replace the ECT sensor or check the wiring yourself. However, for more complex issues, it is recommended to seek professional help.

9. How much does it cost to repair OBDII code P0118 in a 2011 Nissan Sentra?

- The cost of repairs can vary depending on the specific cause of the code and whether you choose to fix it yourself or take it to a mechanic. Costs may include parts and labor.

10. Are there any preventive measures to avoid OBDII code P0118 in a 2011 Nissan Sentra?

- Regular maintenance, such as checking coolant levels, inspecting the ECT sensor, and ensuring proper thermostat function, can help prevent issues that may trigger this code.