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P0118 2006 Infiniti G35 Code - Engine Coolant Temperature Circuit High Input

Quick Answer

The P0118 code on a 2006 Infiniti G35 indicates a problem with the Engine Coolant Temperature (ECT) Circuit High Input. Common causes include Faulty ECT sensor, Wiring issues such as a short or open circuit, Corrosion or poor connections in the ECT sensor circuit. 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 Infiniti G35 indicates Engine Coolant Temperature Circuit High Input.
Common causes
Common causes include Faulty ECT sensor, Wiring issues such as a short or open circuit, Corrosion or poor connections in the ECT sensor circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0118 2006 Infiniti G35 Description

The P0118 code on a 2006 Infiniti G35 indicates a problem with the Engine Coolant Temperature (ECT) Circuit High Input. This means that the Engine Control Module (ECM) has detected a higher than normal voltage signal from the ECT sensor, which measures the temperature of the engine coolant. The ECT sensor is crucial for the engine's performance as it helps the ECM adjust fuel injection, ignition timing, and other engine functions based on the coolant temperature.

OBDII Code P0118 2006 Infiniti G35 - Engine Coolant Temperature Circuit High Input
P0118 2006 Infiniti G35 Code - Engine Coolant Temperature Circuit High Input

Common Causes of P0118 2006 Infiniti G35

  1. Faulty ECT sensor.
  2. Wiring issues such as a short or open circuit.
  3. Corrosion or poor connections in the ECT sensor circuit.
  4. Coolant level too low or contaminated.
  5. Faulty ECM.

Symptoms of P0118 2006 Infiniti G35

  1. Check Engine Light illuminated on the dashboard.
  2. Engine running hotter than normal.
  3. Poor fuel economy.
  4. Engine stalling or rough idling.
  5. Reduced engine performance.

How to Fix P0118 2006 Infiniti G35

  1. Begin by diagnosing the ECT sensor using a multimeter to check for proper resistance values.
  2. Inspect the wiring and connectors for any damage, corrosion, or loose connections.
  3. Check the coolant level and quality, ensuring it is at the correct level and not contaminated.
  4. If the ECT sensor is faulty, replace it with a new one following manufacturer guidelines.
  5. Clear the trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0118 2006 Infiniti G35

The cost of repairing a P0118 code on a 2006 Infiniti G35 can vary depending on the specific cause of the issue. In general, the cost of a new ECT sensor can range from $20 to $100, while labor costs for diagnosis and replacement can range from $100 to $300. Overall, the total repair cost could be between $120 and $400. It's important to note that labor rates and parts prices can vary, so it's advisable to check with local auto repair shops for a more accurate estimate.

When is the Code Detected?

An excessively high voltage from the sensor is sent to ECM.

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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 Infiniti G35 Code

1. What are the common symptoms of OBDII code P0118 in a 2006 Infiniti G35?

The common symptoms of code P0118 in a 2006 Infiniti G35 include a high engine temperature reading on the gauge, overheating, rough idling, poor fuel economy, and potential stalling.

2. What does the OBDII code P0118 Engine Coolant Temperature Circuit High Input indicate in a 2006 Infiniti G35?

The P0118 code in a 2006 Infiniti G35 indicates that the engine control module (ECM) has detected a high voltage signal from the engine coolant temperature sensor.

3. What are the possible causes of OBDII code P0118 in a 2006 Infiniti G35?

Possible causes of code P0118 in a 2006 Infiniti G35 include a faulty engine coolant temperature sensor, a damaged or shorted sensor wiring, a malfunctioning ECM, or issues with the cooling system.

4. How can I diagnose the cause of OBDII code P0118 in my 2006 Infiniti G35?

To diagnose the cause of code P0118, you can start by checking the engine coolant temperature sensor and its wiring for any visible damage. You may also use a multimeter to test the sensor's resistance and voltage output.

5. Can I drive my 2006 Infiniti G35 with OBDII code P0118?

It is not recommended to drive your 2006 Infiniti G35 with an active P0118 code, as it can lead to engine overheating and potential damage. It is best to address the issue promptly.

6. How do I repair OBDII code P0118 in my 2006 Infiniti G35?

Repairing code P0118 in a 2006 Infiniti G35 typically involves replacing the engine coolant temperature sensor if it is faulty, repairing any damaged wiring, and clearing the code with an OBDII scanner.

7. Will resetting the OBDII code P0118 in my 2006 Infiniti G35 solve the issue?

Simply resetting the P0118 code in a 2006 Infiniti G35 may temporarily turn off the check engine light, but it will not fix the underlying problem causing the high input signal. It is important to diagnose and repair the issue.

8. How much does it cost to repair OBDII code P0118 in a 2006 Infiniti G35?

The cost of repairing code P0118 in a 2006 Infiniti G35 can vary depending on the cause of the issue. Replacing the engine coolant temperature sensor can cost around $50 to $150, while labor costs may vary based on the mechanic's rates.

9. Can a DIY enthusiast fix OBDII code P0118 in a 2006 Infiniti G35?

If you have the necessary tools and experience, you may be able to fix code P0118 in your 2006 Infiniti G35 yourself by replacing the engine coolant temperature sensor and checking the wiring. However, it is recommended to consult a professional if you are unsure.

10. How long does it take to repair OBDII code P0118 in a 2006 Infiniti G35?

The repair time for code P0118 in a 2006 Infiniti G35 can vary depending on the extent of the issue and your expertise. Replacing the engine coolant temperature sensor typically takes around 1-2 hours, but additional diagnosis and repairs may be needed.

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