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P0118 2019 Honda CR-V Code - Engine Coolant Temperature Sensor 1 Circuit High Voltage

Quick Answer

The P0118 code on a 2019 Honda CR-V indicates a problem with the Engine Coolant Temperature Sensor 1 Circuit, specifically detecting a high voltage. Common causes include Faulty Engine Coolant Temperature Sensor: The sensor itself may be malfunctioning, providing incorrect readings to the ECM, Wiring Issues: Damaged or corroded wiring connecting the ECT sensor to the ECM can result in high voltage readings, ECM Malfunction: A problem with the engine control module can also cause the ECT sensor to report high voltage. 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 2019 Honda CR-V indicates Engine Coolant Temperature Sensor 1 Circuit High Voltage.
Common causes
Common causes include Faulty Engine Coolant Temperature Sensor: The sensor itself may be malfunctioning, providing incorrect readings to the ECM, Wiring Issues: Damaged or corroded wiring connecting the ECT sensor to the ECM can result in high voltage readings, ECM Malfunction: A problem with the engine control module can also cause the ECT sensor to report high voltage.
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 17, 2024
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Code P0118 2019 Honda CR-V Description

The P0118 code on a 2019 Honda CR-V indicates a problem with the Engine Coolant Temperature Sensor 1 Circuit, specifically detecting a high voltage. The Engine Coolant Temperature (ECT) sensor is a crucial component that monitors the temperature of the engine coolant. This information is essential for the engine control module (ECM) to adjust fuel delivery and ignition timing, ensuring optimal performance and efficiency.

OBDII Code P0118 2019 Honda CR-V - Engine Coolant Temperature Sensor 1 Circuit High Voltage
P0118 2019 Honda CR-V Code - Engine Coolant Temperature Sensor 1 Circuit High Voltage

Common Causes of P0118 2019 Honda CR-V

  1. Faulty Engine Coolant Temperature Sensor: The sensor itself may be malfunctioning, providing incorrect readings to the ECM.
  2. Wiring Issues: Damaged or corroded wiring connecting the ECT sensor to the ECM can result in high voltage readings.
  3. ECM Malfunction: A problem with the engine control module can also cause the ECT sensor to report high voltage.
  4. Coolant Leaks: Low coolant levels or leaks can affect the accuracy of the ECT sensor readings.

Symptoms of P0118 2019 Honda CR-V

  1. Check Engine Light: The most common symptom associated with the P0118 code is the illumination of the check engine light on the dashboard.
  2. Engine Overheating: A faulty ECT sensor may not accurately detect the engine coolant temperature, leading to potential overheating issues.
  3. Poor Fuel Economy: Incorrect temperature readings can result in the engine running rich or lean, affecting fuel efficiency.
  4. Rough Idle: The engine may experience rough idling or stalling due to incorrect fuel mixture caused by the high voltage reading.

How to Fix P0118 2019 Honda CR-V

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble code and perform further testing to pinpoint the exact cause of the high voltage reading.
  2. Replace the Engine Coolant Temperature Sensor: If the sensor is faulty, it will need to be replaced with a new one to ensure accurate temperature readings.
  3. Check Wiring: Inspect the wiring harness for any damage or corrosion, repairing or replacing any affected wires as needed.
  4. Test ECM: If all other components check out, the ECM may need to be tested or reprogrammed to address the high voltage issue.
  5. Clear Codes and Test Drive: After the repair is completed, clear the trouble codes from the ECM and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0118 2019 Honda CR-V

The cost of repairing a P0118 code on a 2019 Honda CR-V can vary depending on the specific cause of the issue. Typically, the price range for this repair can be between $100 to $300, including parts and labor. However, it's essential to note that labor rates at auto repair shops can vary significantly, ranging from $80 to $150 per hour. Additional costs may apply if other components need to be replaced or if further diagnostics are required. It's recommended to consult with a qualified mechanic or dealership to get an accurate estimate based on your location and vehicle specifics.

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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 2019 Honda CR-V Code

1. What are the common symptoms of OBDII code P0118 in a 2019 Honda CR-V?

The common symptoms of OBDII code P0118 in a 2019 Honda CR-V include the engine running hotter than normal, the temperature gauge showing inaccurate readings, and the Check Engine light illuminating on the dashboard.

2. What does the OBDII code P0118 "Engine Coolant Temperature Sensor 1 Circuit High Voltage" mean in a 2019 Honda CR-V?

The OBDII code P0118 in a 2019 Honda CR-V indicates that the Engine Coolant Temperature Sensor 1 is reporting a high voltage signal to the Engine Control Module (ECM), suggesting a potential issue with the sensor or its circuit.

3. What are the possible causes of OBDII code P0118 in a 2019 Honda CR-V?

Possible causes of OBDII code P0118 in a 2019 Honda CR-V include a faulty Engine Coolant Temperature Sensor, a short or open circuit in the sensor's wiring, a corroded connector, or issues with the ECM.

4. How can I diagnose the OBDII code P0118 in my 2019 Honda CR-V?

To diagnose OBDII code P0118 in a 2019 Honda CR-V, you can use an OBDII scanner to read the code and monitor the engine coolant temperature sensor's readings. Additionally, check the sensor's wiring and connector for any visible damage.

5. Can I continue driving my 2019 Honda CR-V with OBDII code P0118?

It is not recommended to continue driving your 2019 Honda CR-V with OBDII code P0118, as it can lead to potential engine overheating and damage. It is best to address the issue promptly to avoid further complications.

6. How can I repair OBDII code P0118 in my 2019 Honda CR-V?

To repair OBDII code P0118 in a 2019 Honda CR-V, you may need to replace the Engine Coolant Temperature Sensor if it is faulty. Ensure the sensor's wiring and connector are in good condition, and clear the code using an OBDII scanner after the repair.

7. Is it possible to reset the OBDII code P0118 in my 2019 Honda CR-V without fixing the issue?

While you can clear the OBDII code P0118 in a 2019 Honda CR-V using an OBDII scanner, it is crucial to fix the underlying issue causing the code to prevent future problems with engine coolant temperature monitoring.

8. How much does it cost to repair OBDII code P0118 in a 2019 Honda CR-V?

The cost to repair OBDII code P0118 in a 2019 Honda CR-V can vary depending on the cause of the issue. Replacing the Engine Coolant Temperature Sensor or repairing the wiring may cost anywhere from $50 to $200, including parts and labor.

9. Can a DIY enthusiast fix OBDII code P0118 in a 2019 Honda CR-V?

If you have experience with automotive repairs and access to the necessary tools, you may be able to fix OBDII code P0118 in a 2019 Honda CR-V as a DIY project. However, it is essential to follow the manufacturer's guidelines and safety precautions.

10. How often does OBDII code P0118 occur in a 2019 Honda CR-V?

OBDII code P0118, indicating an issue with the Engine Coolant Temperature Sensor circuit's high voltage, can occur sporadically in a 2019 Honda CR-V due to sensor malfunctions, wiring problems, or ECM issues. Regular maintenance and monitoring can help prevent this code from recurring frequently.

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