AutoCodes – Honda – P0117 Honda

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

Quick Answer

The Engine Coolant Temperature (ECT) Sensor 1 is used for air/fuel ratio feedback control, ignition timing control, idle speed control, and other functions. Common causes include Faulty Engine Coolant Temperature (ECT) Sensor 1, Engine Coolant Temperature Sensor 1 harness is open or shorted, Engine Coolant Temperature Sensor 1 circuit poor electrical connection. 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 Honda indicates Engine Coolant Temperature Sensor 1 Circuit Low Voltage.
Common causes: Common causes include Faulty Engine Coolant Temperature (ECT) Sensor 1, Engine Coolant Temperature Sensor 1 harness is open or shorted, Engine Coolant Temperature Sensor 1 circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 48,630

How popular is this code, among other codes? Medium

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 Aug 01, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0117 Honda Description

The Engine Coolant Temperature (ECT) Sensor 1 is used for air/fuel ratio feedback control, ignition timing control, idle speed control, and other functions. ECT Sensor 1 resistance varies depending on the engine coolant temperature. As the engine coolant cools, ECT Sensor 1 resistance increases, and the Powertrain Control Module (PCM) detects a high signal voltage. As the engine coolant warms, ECT Sensor 1 resistance decreases, and the PCM detects a low signal voltage. If the ECT Sensor 1 output voltage is a set value, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0117 Honda - Engine Coolant Temperature Sensor 1 Circuit Low Voltage - AutoCodes.com — P0117 Honda Code - Engine Coolant Temperature Sensor 1 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0117 Honda?

Faulty Engine Coolant Temperature (ECT) Sensor 1
Engine Coolant Temperature Sensor 1 harness is open or shorted
Engine Coolant Temperature Sensor 1 circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0117 Honda?

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 P0117 Honda 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 P0117 Honda code?

Need more information on how to fix the P0117 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0117 Honda code diagnosed by a professional: Find a repair shop in your area

Information for Specific Honda Models

P0117 2008 Honda Accord — Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 2009 Honda Accord — Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 2010 Honda Accord — Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 1996 Honda Civic — Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 1997 Honda Civic — Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 1998 Honda Civic — Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 1999 Honda Civic — Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 2000 Honda Civic — Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 2016 Honda CR-V — Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 2017 Honda CR-V — Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 2018 Honda CR-V — Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 2019 Honda CR-V — Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 2020 Honda CR-V — Engine Coolant Temperature Sensor 1 Circuit Low Voltage
P0117 2021 Honda CR-V — Engine Coolant Temperature Sensor 1 Circuit Low Voltage

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 Honda Code

1. What are common symptoms of OBDII code P0117 in a Honda vehicle?

The common symptoms of code P0117 in a Honda include issues with the engine temperature gauge reading incorrectly, the vehicle running hotter than normal, and possible issues with the engine performance.

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

The P0117 code in a Honda is often triggered by a faulty engine coolant temperature sensor, a poor electrical connection to the sensor, or issues with the sensor wiring.

3. How can I diagnose the cause of the P0117 code in my Honda?

To diagnose the P0117 code in your Honda, you can start by checking the engine coolant temperature sensor for any signs of damage or corrosion, inspecting the sensor wiring for any breaks or shorts, and testing the sensor's electrical connection.

4. Can a faulty thermostat cause the P0117 code in a Honda?

Yes, a faulty thermostat can potentially cause the P0117 code in a Honda by affecting the engine coolant temperature readings and triggering the sensor circuit low voltage error.

5. What are the repair options for fixing the P0117 code in a Honda?

Repair options for resolving the P0117 code in a Honda include replacing the engine coolant temperature sensor, repairing any damaged sensor wiring, ensuring a good electrical connection, and addressing any underlying issues such as a faulty thermostat.

6. Can driving with the P0117 code in a Honda cause further damage?

Continuing to drive with the P0117 code in a Honda can potentially lead to overheating issues, engine performance problems, and reduced fuel efficiency. It is recommended to address the issue promptly.

7. How much does it typically cost to repair the P0117 code in a Honda?

The cost of repairing the P0117 code in a Honda can vary depending on the cause of the issue, the parts needed for repair, and labor costs. On average, the repair cost can range from $100 to $300.

8. Is it possible to reset the OBDII code P0117 in a Honda without fixing the underlying issue?

While you can clear the P0117 code using an OBDII scanner, it is essential to address the underlying problem causing the error code to prevent further issues with engine performance and overheating.

9. Can a DIY enthusiast fix the P0117 code in a Honda at home?

Depending on your level of automotive knowledge and skills, some DIY enthusiasts may be able to replace the engine coolant temperature sensor or repair the wiring themselves. However, if unsure, it is recommended to seek professional help.

10. How long does it take to repair the P0117 code in a Honda?

The repair time for the P0117 code in a Honda can vary based on the exact cause of the issue and the complexity of the repair. Typically, it can take anywhere from 1 to 2 hours to complete the repair.