AutoCodes – Nissan – P0118 2005 Nissan Maxima

P0118 2005 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 2005 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 9,567

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 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 2005 Nissan Maxima - Engine Coolant Temperature Sensor Circuit High - AutoCodes.com — P0118 2005 Nissan Maxima Code - Engine Coolant Temperature Sensor Circuit High

What does this mean?

What are the Possible Causes of the DTC P0118 2005 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 2005 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 2005 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 2005 Nissan Maxima 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 2005 Nissan Maxima Code

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

- Common symptoms include engine overheating, poor fuel economy, rough idling, and a check engine light on the dashboard.

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

- The code P0118 indicates a problem with the Engine Coolant Temperature (ECT) sensor circuit reporting a high voltage signal.

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

- Potential causes include a faulty ECT sensor, a damaged ECT sensor connector, a short or open circuit in the ECT sensor wiring, or a malfunction in the engine control module (ECM).

4. How can I diagnose the issue causing OBDII code P0118 in my 2005 Nissan Maxima?

- You can diagnose the issue by checking the ECT sensor's resistance, inspecting the sensor wiring for damage, and using a multimeter to test the sensor's voltage output.

5. Can I still drive my 2005 Nissan Maxima with OBDII code P0118?

- It is not recommended to drive the vehicle with code P0118, as it can lead to engine damage due to incorrect temperature readings and potential overheating.

6. How do I repair OBDII code P0118 in a 2005 Nissan Maxima?

- Repair involves replacing the faulty ECT sensor, repairing any damaged wiring or connectors, and clearing the trouble code with an OBDII scanner.

7. Will resetting the trouble code by disconnecting the battery fix OBDII code P0118 in a 2005 Nissan Maxima?

- Resetting the code may temporarily turn off the check engine light, but it will not fix the underlying issue causing code P0118.

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

- The cost of repair can vary depending on the labor rates and parts prices, but replacing the ECT sensor and addressing associated wiring issues may cost around $100 to $200.

9. Are there any preventive maintenance steps to avoid OBDII code P0118 in a 2005 Nissan Maxima?

- Regularly inspecting the ECT sensor and its wiring for damage, and ensuring proper coolant levels and system operation can help prevent issues leading to code P0118.

10. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P0118 in a 2005 Nissan Maxima?

- Yes, a DIY enthusiast with basic knowledge can often replace the ECT sensor and address wiring issues associated with code P0118, provided they have the necessary tools and precautions.