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P0117 2010 Honda Accord Code - Engine Coolant Temperature Sensor 1 Circuit Low Voltage

Quick Answer

The P0117 code on a 2010 Honda Accord indicates a problem with the Engine Coolant Temperature (ECT) Sensor 1 Circuit, specifically low voltage. Common causes include Faulty ECT sensor, Damaged or corroded wiring or connectors in the ECT sensor circuit, Malfunctioning 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
P0117 2010 Honda Accord indicates Engine Coolant Temperature Sensor 1 Circuit Low Voltage.
Common causes
Common causes include Faulty ECT sensor, Damaged or corroded wiring or connectors in the ECT sensor circuit, Malfunctioning 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 07, 2024
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Code P0117 2010 Honda Accord Description

The P0117 code on a 2010 Honda Accord indicates a problem with the Engine Coolant Temperature (ECT) Sensor 1 Circuit, specifically low voltage. The ECT sensor is responsible for measuring the temperature of the engine coolant and sending this information to the engine control module (ECM). The ECM uses this data to adjust fuel delivery and ignition timing to ensure optimal engine performance and efficiency.

OBDII Code P0117 2010 Honda Accord - Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 2010 Honda Accord Code - Engine Coolant Temperature Sensor 1 Circuit Low Voltage

Common Causes of P0117 2010 Honda Accord

  1. Faulty ECT sensor
  2. Damaged or corroded wiring or connectors in the ECT sensor circuit
  3. Malfunctioning ECM
  4. Low coolant level or contaminated coolant affecting sensor readings

Symptoms of P0117 2010 Honda Accord

  1. Poor fuel economy
  2. Rough idling or stalling
  3. Difficulty starting the engine
  4. Engine overheating
  5. Check Engine light illuminated

How to Fix P0117 2010 Honda Accord

  1. Begin by diagnosing the issue using a scan tool to confirm the P0117 code and checking the ECT sensor's voltage readings.
  2. Inspect the wiring and connectors in the ECT sensor circuit for any damage or corrosion, repairing or replacing as needed.
  3. Test the ECT sensor for proper operation and replace if faulty.
  4. Clear the code from the ECM and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to check for potential ECM issues or coolant system problems.

Cost to Fix P0117 2010 Honda Accord

The typical repair costs for addressing a P0117 code on a 2010 Honda Accord can vary depending on the specific cause of the issue. In general, parts for replacing the ECT sensor or repairing wiring/connectors may range from $50 to $150, while labor costs can add another $80 to $150 per hour. Overall, the total repair cost could range from $150 to $500, but it's advisable to check with local auto repair shops for more accurate pricing based on your location and vehicle specifics.

When is the Code Detected?

An excessively low 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 P0117 2010 Honda Accord Code

1. What are the common symptoms of OBDII code P0117 in a 2010 Honda Accord?

The common symptoms of OBDII code P0117 in a 2010 Honda Accord include issues with the engine's performance, such as poor fuel economy, rough idling, or difficulty starting the vehicle.

2. What could cause the Engine Coolant Temperature Sensor 1 Circuit Low Voltage code in a 2010 Honda Accord?

The OBDII code P0117 in a 2010 Honda Accord is typically caused by a malfunctioning engine coolant temperature sensor, a faulty wiring connection, or a problem with the sensor's electrical circuit.

3. How can I diagnose the Engine Coolant Temperature Sensor 1 Circuit Low Voltage issue in my 2010 Honda Accord?

To diagnose the P0117 code in a 2010 Honda Accord, you can use a diagnostic scanner to read the code, test the engine coolant temperature sensor using a multimeter, and inspect the wiring and connections for any damage or corrosion.

4. Is it safe to continue driving my 2010 Honda Accord with the P0117 code triggered?

It is not recommended to drive your 2010 Honda Accord with the P0117 code triggered, as it can lead to potential engine performance issues and may cause further damage if left unresolved.

5. How can I repair the Engine Coolant Temperature Sensor 1 Circuit Low Voltage problem in my 2010 Honda Accord?

To repair the P0117 code in a 2010 Honda Accord, you may need to replace the engine coolant temperature sensor, repair any damaged wiring or connections, and clear the code using a diagnostic scanner.

6. Can a DIY enthusiast fix the P0117 code in a 2010 Honda Accord?

If you have the necessary tools and knowledge, a DIY enthusiast can potentially fix the P0117 code in a 2010 Honda Accord by following a repair manual or online guides. However, if you are unsure, it's best to consult a professional mechanic.

7. Will resetting the OBDII code P0117 in my 2010 Honda Accord make the issue go away?

Simply resetting the OBDII code P0117 in a 2010 Honda Accord will not fix the underlying problem causing the code. It's important to diagnose and repair the root cause to prevent the code from reoccurring.

8. How long does it take to repair the Engine Coolant Temperature Sensor 1 Circuit Low Voltage issue in a 2010 Honda Accord?

The repair time for the P0117 code in a 2010 Honda Accord can vary depending on the exact cause of the issue, but it typically takes a few hours to diagnose and fix the problem.

9. What is the cost to repair the Engine Coolant Temperature Sensor 1 Circuit Low Voltage issue in a 2010 Honda Accord?

The cost to repair the P0117 code in a 2010 Honda Accord can vary based on the parts needed and labor rates, but it may range from $100 to $300 or more, depending on the extent of the repair.

10. Can a faulty Engine Coolant Temperature Sensor affect other systems in a 2010 Honda Accord?

Yes, a faulty Engine Coolant Temperature Sensor can affect other systems in a 2010 Honda Accord, such as the fuel injection system, emission control system, and overall engine performance.

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