AutoCodes – Nissan – P0118 2006 Nissan Maxima

P0118 2006 Nissan Maxima 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 2006 Nissan Maxima 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 10,601

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 2006 Nissan Maxima 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 2006 Nissan Maxima - Engine Coolant Temperature Sensor Circuit High - AutoCodes.com — P0118 2006 Nissan Maxima Code - Engine Coolant Temperature Sensor Circuit High

What does this mean?

What are the Possible Causes of the DTC P0118 2006 Nissan Maxima?

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 2006 Nissan Maxima?

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 2006 Nissan Maxima 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 2006 Nissan Maxima code?

Need more information on how to fix the P0118 2006 Nissan Maxima 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 2006 Nissan Maxima Code

1. What are the common symptoms of OBDII code P0118 on a 2006 Nissan Maxima?

The common symptoms include the engine running hotter than normal, the temperature gauge showing maximum or erratic readings, and the Check Engine light being illuminated.

2. What does the OBDII code P0118 indicate on a 2006 Nissan Maxima?

The code P0118 indicates an issue with the Engine Coolant Temperature (ECT) sensor circuit registering a high voltage, potentially leading to inaccurate temperature readings.

3. What are the possible causes of OBDII code P0118 on a 2006 Nissan Maxima?

Possible causes include a faulty ECT sensor, a damaged sensor wiring harness, a corroded connector, low coolant levels, air pockets in the cooling system, or a malfunctioning engine control module (ECM).

4. How can I diagnose the cause of OBDII code P0118 on a 2006 Nissan Maxima?

You can diagnose the issue by checking the ECT sensor's resistance, inspecting the wiring for any damage, ensuring proper coolant levels, performing a visual inspection of the sensor connections, and using a scan tool to monitor live data.

5. Can I drive my 2006 Nissan Maxima with OBDII code P0118?

It is not recommended to drive the vehicle with code P0118, as inaccurate temperature readings can lead to engine overheating, poor performance, and potential damage. It is best to address the issue promptly.

6. How do I repair OBDII code P0118 on a 2006 Nissan Maxima?

Repair options include replacing the faulty ECT sensor, repairing or replacing damaged wiring or connectors, flushing and refilling the coolant system, and resetting the fault code using an OBDII scanner.

7. Is it necessary to reset the OBDII code P0118 after repairs on a 2006 Nissan Maxima?

Yes, it is important to reset the fault code using an OBDII scanner after making repairs to ensure the Check Engine light is cleared and the system can monitor for any new issues.

8. Can a DIY enthusiast fix OBDII code P0118 on a 2006 Nissan Maxima?

Yes, some repairs for code P0118 can be done by a DIY enthusiast, such as replacing the ECT sensor or checking for damaged wiring. However, more complex issues may require professional diagnosis and repair.

9. How much does it cost to repair OBDII code P0118 on a 2006 Nissan Maxima?

The cost of repairing code P0118 can vary depending on the cause of the issue and whether you choose to do the repairs yourself or take it to a mechanic. Costs may range from $50 for a DIY repair to a few hundred dollars for professional diagnosis and replacement.

10. Are there any preventive measures to avoid OBDII code P0118 on a 2006 Nissan Maxima?

Regularly checking coolant levels, ensuring proper maintenance of the cooling system, and addressing any overheating issues promptly can help prevent the occurrence of code P0118 on your 2006 Nissan Maxima.