AutoCodes – Toyota – P0117 2006 Toyota Prius

P0117 2006 Toyota Prius Code - Engine Coolant Temperature Circuit Low Input

Quick Answer

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. Common causes include Low engine coolant level, Faulty Engine Coolant Temperature (ECT) sensor, Faulty engine coolant thermostat. 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 2006 Toyota Prius indicates Engine Coolant Temperature Circuit Low Input.
Common causes: Common causes include Low engine coolant level, Faulty Engine Coolant Temperature (ECT) sensor, Faulty engine coolant thermostat.
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.

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Code Popularity 6,652

How popular is this code, among other codes? Low

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0117 2006 Toyota Prius Description

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.

OBDII Code P0117 2006 Toyota Prius - Engine Coolant Temperature Circuit Low Input - AutoCodes.com — P0117 2006 Toyota Prius Code - Engine Coolant Temperature Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0117 2006 Toyota Prius?

Low engine coolant level
Faulty Engine Coolant Temperature (ECT) sensor
Faulty engine coolant thermostat
Engine Coolant Temperature (ECT) sensor harness is open or shorted
Engine Coolant Temperature (ECT) sensor circuit poor electrical connection

How to Fix the DTC P0117 2006 Toyota Prius?

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 does this mean?

Code Tech Notes

If there are no coolant leaks, replace the thermostat first, if problem is still there check/replace coolant temperature sensor.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0117 2006 Toyota Prius 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 2006 Toyota Prius code?

Need more information on how to fix the P0117 2006 Toyota Prius code? Get Access to Factory Service Manuals

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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 2006 Toyota Prius Code

1. What are the common symptoms of OBDII code P0117 in a 2006 Toyota Prius?

The common symptoms of code P0117 in a 2006 Toyota Prius include an illuminated check engine light, temperature gauge reading incorrectly, poor fuel economy, and potential overheating issues.

2. What does the OBDII code P0117 indicate in a 2006 Toyota Prius?

OBDII code P0117 in a 2006 Toyota Prius indicates an issue with the Engine Coolant Temperature (ECT) sensor circuit, specifically a low input signal being detected by the engine control module (ECM).

3. What are the possible causes of OBDII code P0117 in a 2006 Toyota Prius?

Possible causes of code P0117 in a 2006 Toyota Prius include a faulty ECT sensor, damaged wiring or connectors in the ECT circuit, low engine coolant level, or a malfunctioning ECM.

4. How can I diagnose the OBDII code P0117 in my 2006 Toyota Prius?

Diagnosing code P0117 in a 2006 Toyota Prius involves checking the ECT sensor for proper resistance values, inspecting the wiring and connectors for damage, verifying the engine coolant level, and using a scan tool to monitor ECT sensor data.

5. Can I drive my 2006 Toyota Prius with OBDII code P0117?

It is not recommended to drive your 2006 Toyota Prius with OBDII code P0117, as it can lead to engine performance issues, overheating, and potential damage. It is advised to address the issue promptly.

6. How can I repair OBDII code P0117 in my 2006 Toyota Prius?

Repairing OBDII code P0117 in a 2006 Toyota Prius typically involves replacing the faulty ECT sensor, repairing any damaged wiring or connectors, ensuring the engine coolant level is adequate, and clearing the trouble code with a scan tool.

7. Will resetting the check engine light resolve OBDII code P0117 in a 2006 Toyota Prius?

Simply resetting the check engine light will not resolve OBDII code P0117 in a 2006 Toyota Prius. It is important to diagnose the underlying issue causing the code and perform necessary repairs to prevent it from reoccurring.

8. How much does it cost to fix OBDII code P0117 in a 2006 Toyota Prius?

The cost to fix OBDII code P0117 in a 2006 Toyota Prius can vary depending on the root cause of the issue. Replacing the ECT sensor or repairing wiring may cost anywhere from $100 to $300, including parts and labor.

9. Can a DIY enthusiast repair OBDII code P0117 in a 2006 Toyota Prius?

A DIY enthusiast with automotive repair experience may be able to repair OBDII code P0117 in a 2006 Toyota Prius by following a repair manual or online guides. However, it is recommended to have proper tools and knowledge to ensure a successful repair.

10. How often does OBDII code P0117 occur in a 2006 Toyota Prius?

OBDII code P0117 can occur sporadically or more frequently depending on the driving conditions, maintenance of the vehicle, and the age of the components involved. Regular maintenance and inspection can help prevent the recurrence of this code.