AutoCodes – Nissan – P0118 2005 Nissan Sentra

P0118 2005 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 2005 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 7,403

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
Cost to Diagnose
FAQs
Comments
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Code P0118 2005 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 2005 Nissan Sentra - Engine Coolant Temperature Sensor Circuit High - AutoCodes.com — P0118 2005 Nissan Sentra Code - Engine Coolant Temperature Sensor Circuit High

What does this mean?

What are the Possible Causes of the DTC P0118 2005 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 2005 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0118 2005 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 2005 Nissan Sentra code?

Need more information on how to fix the P0118 2005 Nissan Sentra code? Get Access to Factory Service Manuals

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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 2005 Nissan Sentra Code

1. What are common symptoms of OBDII code P0118 in a 2005 Nissan Sentra?

- Common symptoms include the engine temperature gauge reading maximum or minimum, the Check Engine light illuminating, and potential issues with fuel efficiency.

2. What does the OBDII code P0118 indicate in a 2005 Nissan Sentra?

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

3. What are possible causes of OBDII code P0118 in a 2005 Nissan Sentra?

- Possible causes include a faulty ECT sensor, a short or open circuit in the ECT sensor wiring, a malfunctioning thermostat, or issues with the engine coolant itself.

4. How can I diagnose the OBDII code P0118 in my 2005 Nissan Sentra?

- Diagnose the code by checking the ECT sensor's electrical connections, testing the sensor's resistance, inspecting the wiring for any damage, and verifying proper coolant levels and thermostat operation.

5. Can OBDII code P0118 in a 2005 Nissan Sentra cause engine performance issues?

- Yes, a faulty ECT sensor causing code P0118 can lead to engine performance issues such as rough idling, poor acceleration, and potential overheating problems.

6. How can I repair OBDII code P0118 in my 2005 Nissan Sentra?

- Repair options include replacing the faulty ECT sensor, repairing any damaged wiring, ensuring the thermostat is functioning correctly, and topping up or flushing the engine coolant if necessary.

7. Is it safe to drive with OBDII code P0118 in a 2005 Nissan Sentra?

- It is not recommended to drive with code P0118 as it can affect engine performance and potentially lead to overheating issues. It is best to address the problem promptly.

8. Can a DIY enthusiast fix OBDII code P0118 in a 2005 Nissan Sentra?

- Depending on your skill level, diagnosing and repairing code P0118 may be possible for DIY enthusiasts. However, if unsure, it is advisable to seek professional assistance to prevent further complications.

9. Will resetting the OBDII code P0118 in a 2005 Nissan Sentra make it go away permanently?

- Resetting the code may temporarily clear the Check Engine light, but if the underlying issue causing code P0118 is not fixed, the code is likely to reappear.

10. How much does it typically cost to repair OBDII code P0118 in a 2005 Nissan Sentra?

- The cost of repairing code P0118 can vary depending on the cause of the issue. Replacing the ECT sensor or fixing wiring problems may cost between $100 to $300, including parts and labor.