AutoCodes – Scion – P0117 Scion

P0117 Scion Code - Engine Coolant Temperature Circuit Low Input

Quick Answer

The engine coolant temperature sensor is used to monitor the engine coolant temperature. Common causes include Low engine coolant level, Faulty Engine Coolant Thermostat, Faulty Engine Coolant Temperature (ECT) sensor. 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 Scion indicates Engine Coolant Temperature Circuit Low Input.
Common causes: Common causes include Low engine coolant level, Faulty Engine Coolant Thermostat, Faulty Engine Coolant Temperature (ECT) sensor.
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 15,165

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 Aug 23, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0117 Scion Description

The engine coolant temperature sensor is used to monitor the engine coolant temperature. The engine coolant temperature sensor has a thermistor with a resistance that varies according to the temperature of the engine coolant. When the coolant temperature is low, the resistance in the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are reflected in the output voltage from the sensor. The Engine Control Module (ECM) monitors the sensor voltage and uses this value to calculate the engine coolant temperature. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a fault in the engine coolant temperature sensor circuit and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0117 Scion - Engine Coolant Temperature Circuit Low Input - AutoCodes.com — P0117 Scion Code - Engine Coolant Temperature Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0117 Scion?

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

How to Fix the DTC P0117 Scion?

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

Start by checking the engine coolant level at the coolant reservoir, a low level may indicate a coolant leak. If the coolant level is correct, you should replace the Engine Coolant Temperature (ECT) sensor to fix the problem. The Engine Coolant Thermostat must be replaced every time there is a repair with the coolant system.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0117 Scion 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 Scion code?

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Information for Specific Scion Models

P0117 2005 Scion xB — Engine Coolant Temperature Circuit Low Input
P0117 2006 Scion xB — Engine Coolant Temperature Circuit Low Input
P0117 2007 Scion xB — Engine Coolant Temperature Circuit Low Input

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 Scion Code

1. What are the common symptoms of OBDII code P0117 in a Scion?

The common symptoms of code P0117 in a Scion include issues with the engine cooling system, such as overheating, poor fuel economy, rough idling, and a possible check engine light.

2. What causes the OBDII code P0117 in a Scion?

The most common cause of code P0117 in a Scion is a malfunctioning engine coolant temperature (ECT) sensor, which may be sending incorrect signals to the engine control module (ECM).

3. How can I diagnose the OBDII code P0117 in my Scion?

To diagnose code P0117, you can use an OBDII scanner to read the code and check the ECT sensor for proper resistance values. Additionally, you can visually inspect the wiring and connectors related to the ECT sensor for any signs of damage.

4. Can a faulty thermostat cause OBDII code P0117 in a Scion?

Yes, a faulty thermostat can cause code P0117 in a Scion. A thermostat stuck in the open position can prevent the engine from reaching the correct operating temperature, leading to a low input signal error.

5. How do I repair OBDII code P0117 in my Scion?

To repair code P0117, you may need to replace the engine coolant temperature sensor if it is faulty. Additionally, checking and replacing the thermostat if necessary can help resolve the issue.

6. Is it safe to continue driving my Scion with OBDII code P0117?

It is not recommended to continue driving your Scion with OBDII code P0117, as it can lead to potential engine performance issues and overheating problems. It is best to address the underlying cause of the code promptly.

7. Can a dirty or low coolant level trigger OBDII code P0117 in a Scion?

Yes, a dirty or low coolant level can affect the accuracy of the engine coolant temperature sensor readings, potentially triggering code P0117 in a Scion. Ensure that the coolant level is adequate and clean.

8. Will resetting the check engine light resolve OBDII code P0117 in a Scion?

Resetting the check engine light may temporarily turn off the warning indicator, but it will not address the underlying issue causing code P0117. It is essential to diagnose and fix the root cause of the problem.

9. How much does it cost to fix OBDII code P0117 in a Scion?

The cost of fixing code P0117 in a Scion can vary depending on the cause of the issue. Replacing the engine coolant temperature sensor or thermostat can cost anywhere from $50 to $200, including parts and labor.

10. Can a DIY enthusiast repair OBDII code P0117 in a Scion?

Yes, a DIY enthusiast with the necessary tools and knowledge can attempt to repair code P0117 in a Scion by replacing the engine coolant temperature sensor or thermostat. However, if unsure, it's best to consult a professional mechanic.