AutoCodes – Nissan – P0118 2007 Nissan Maxima

P0118 2007 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 2007 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 10,512

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

What does this mean?

What are the Possible Causes of the DTC P0118 2007 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 2007 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 2007 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 2007 Nissan Maxima code?

Need more information on how to fix the P0118 2007 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 2007 Nissan Maxima Code

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

- Common symptoms include the engine running hot or cold, fluctuating temperature gauge readings, poor fuel economy, and potential stalling.

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

- This code indicates a high voltage signal from the engine coolant temperature sensor, suggesting a problem with the sensor or its circuit.

3. What are the potential causes of OBDII code P0118 in a 2007 Nissan Maxima?

- Possible causes include a faulty engine coolant temperature sensor, a short or open circuit in the sensor's wiring, or a problem with the sensor's connector.

4. How can I diagnose the issue causing OBDII code P0118 in my 2007 Nissan Maxima?

- You can use a multimeter to test the engine coolant temperature sensor's resistance, check the wiring for continuity, and inspect the sensor connector for corrosion or damage.

5. Can a high engine coolant temperature cause OBDII code P0118 in a 2007 Nissan Maxima?

- Yes, a high engine coolant temperature can trigger this code if the sensor malfunctions and sends a high voltage signal to the engine control module.

6. How can I repair OBDII code P0118 in my 2007 Nissan Maxima?

- Repair options include replacing the engine coolant temperature sensor, repairing any damaged wiring, and ensuring a secure connection at the sensor's connector.

7. Is it safe to continue driving with OBDII code P0118 in a 2007 Nissan Maxima?

- It is not recommended to drive with this code active, as it can lead to potential overheating issues and engine damage if the coolant temperature is not accurately monitored.

8. Can a dirty or corroded engine coolant temperature sensor cause OBDII code P0118 in a 2007 Nissan Maxima?

- Yes, a dirty or corroded sensor can provide faulty readings, leading to a high voltage signal and triggering the P0118 trouble code.

9. Are there any quick tips for troubleshooting OBDII code P0118 in a 2007 Nissan Maxima?

- Quick tips include checking the coolant level, inspecting the sensor and wiring visually, and resetting the code to see if it reappears after repairs.

10. How important is the engine coolant temperature sensor in a 2007 Nissan Maxima?

- The engine coolant temperature sensor is crucial for proper engine performance, fuel efficiency, and preventing overheating, making it essential to address any issues indicated by OBDII code P0118.