Engine-Codes.com
Engine-Codes – Nissan – P0118 2005 Nissan Altima Sedan

P0118 2005 Nissan Altima Sedan Code - Engine Coolant Temperature Sensor Circuit High

Quick Answer

The P0118 code for a 2005 Nissan Altima Sedan indicates a problem with the Engine Coolant Temperature (ECT) Sensor Circuit registering a high voltage. Common causes include Faulty Engine Coolant Temperature (ECT) sensor, Wiring issues in the ECT sensor circuit, Malfunctioning Engine Control Module (ECM). 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 Altima Sedan indicates Engine Coolant Temperature Sensor Circuit High.
Common causes
Common causes include Faulty Engine Coolant Temperature (ECT) sensor, Wiring issues in the ECT sensor circuit, Malfunctioning Engine Control Module (ECM).
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 12, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0118 2005 Nissan Altima Sedan Description

The P0118 code for a 2005 Nissan Altima Sedan indicates a problem with the Engine Coolant Temperature (ECT) Sensor Circuit registering a high voltage. The ECT sensor is responsible for monitoring the temperature of the engine coolant and sending this information to the engine control module (ECM). The ECM uses this data to adjust fuel injection, ignition timing, and other engine functions to ensure optimal performance and efficiency.

OBDII Code P0118 2005 Nissan Altima Sedan - Engine Coolant Temperature Sensor Circuit High
P0118 2005 Nissan Altima Sedan Code - Engine Coolant Temperature Sensor Circuit High

Common Causes of P0118 2005 Nissan Altima Sedan

  1. Faulty Engine Coolant Temperature (ECT) sensor
  2. Wiring issues in the ECT sensor circuit
  3. Malfunctioning Engine Control Module (ECM)
  4. Cooling system problems, such as low coolant levels or a malfunctioning thermostat
  5. Engine overheating due to a faulty water pump or radiator

Symptoms of P0118 2005 Nissan Altima Sedan

  1. Check Engine Light illuminated on the dashboard
  2. Engine running hotter than normal
  3. Decreased fuel efficiency
  4. Rough idling or stalling
  5. Poor acceleration or engine performance

How to Fix P0118 2005 Nissan Altima Sedan

  1. Begin by diagnosing the issue using a scan tool to confirm the P0118 code and pinpoint the exact cause.
  2. Inspect the ECT sensor and its wiring for any signs of damage or corrosion. Replace the sensor if necessary.
  3. Check the coolant level and quality, ensuring it is at the correct level and not contaminated. Address any cooling system issues.
  4. Test the ECM to ensure it is functioning properly and communicating with the ECT sensor correctly.
  5. Clear the trouble code from the ECM's memory and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P0118 2005 Nissan Altima Sedan

The cost of repairing a P0118 code on a 2005 Nissan Altima Sedan can vary depending on the specific cause of the issue. In general, replacing a faulty ECT sensor can cost between $50 and $150, while addressing wiring or ECM problems may increase the repair cost. Labor rates at auto repair shops typically range from $80 to $150 per hour, so the total repair cost can range from $150 to $500 or more. It's advisable to consult with a professional mechanic to get an accurate estimate based on the specific diagnosis and repair needed for your vehicle.

When is the Code Detected?

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

Need more information about the P0118 2005 Nissan Altima Sedan code?

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

Need Help with the Code?

Get the P0118 2005 Nissan Altima Sedan code diagnosed by a professional: Find a repair shop in your area

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 Altima Sedan Code

1. What are the common symptoms of OBDII code P0118 on a 2005 Nissan Altima Sedan?

The common symptoms of code P0118 on a 2005 Nissan Altima Sedan include overheating engine, rough idling, poor fuel economy, and the Check Engine Light illuminating.

2. What can cause the Engine Coolant Temperature Sensor Circuit High code on a 2005 Nissan Altima Sedan?

Possible causes of code P0118 on a 2005 Nissan Altima Sedan include a faulty engine coolant temperature sensor, damaged wiring or connectors in the coolant temperature sensor circuit, or a problem with the engine control module (ECM).

3. How can I diagnose the Engine Coolant Temperature Sensor Circuit High issue on my 2005 Nissan Altima Sedan?

To diagnose the P0118 code on a 2005 Nissan Altima Sedan, you can use a scan tool to read the code and check the coolant temperature sensor's resistance, inspect the wiring and connectors for damage, and verify the coolant temperature readings with a multimeter.

4. Can I continue driving my 2005 Nissan Altima Sedan with the P0118 code present?

It is not recommended to drive your 2005 Nissan Altima Sedan with the P0118 code active, as it can lead to engine overheating and potential damage. It is best to address the issue promptly.

5. How can I repair the Engine Coolant Temperature Sensor Circuit High code on my 2005 Nissan Altima Sedan?

To repair the P0118 code on a 2005 Nissan Altima Sedan, you may need to replace the engine coolant temperature sensor, repair any damaged wiring or connectors, or reprogram the engine control module (ECM) if necessary.

6. Is it possible to reset the P0118 code on a 2005 Nissan Altima Sedan without fixing the issue?

While you can clear the code using a scan tool, the underlying issue causing the P0118 code will persist unless properly addressed. It is recommended to diagnose and repair the problem to prevent further issues.

7. Will a faulty Engine Coolant Temperature Sensor affect the performance of my 2005 Nissan Altima Sedan?

Yes, a faulty engine coolant temperature sensor can affect the performance of your 2005 Nissan Altima Sedan by causing issues such as poor fuel economy, rough idling, and potential engine overheating.

8. How much does it typically cost to repair the P0118 code on a 2005 Nissan Altima Sedan?

The cost of repairing the P0118 code on a 2005 Nissan Altima Sedan can vary depending on the exact cause of the issue. Costs may include parts such as a new coolant temperature sensor and labor for diagnostics and repair.

9. Can a DIY enthusiast fix the Engine Coolant Temperature Sensor Circuit High issue on a 2005 Nissan Altima Sedan?

If you have the necessary tools, knowledge, and experience, a DIY enthusiast may be able to fix the P0118 code on a 2005 Nissan Altima Sedan by following repair guides and procedures.

10. How long does it take to repair the P0118 code on a 2005 Nissan Altima Sedan?

The repair time for the P0118 code on a 2005 Nissan Altima Sedan can vary depending on the exact cause of the issue and the complexity of the repair. It may take anywhere from a few hours to a full day to complete the repair.

Discuss the causes and fixes for P0118 2005 Nissan Altima Sedan OBDII Code

Submit a New Comment

Code P0118 2005 Nissan Altima Sedan comments

No comments found for this page.