AutoCodes – Scion – P0116 Scion

P0116 Scion Code - Engine Coolant Temperature Circuit Range / Performance Problem

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: P0116 Scion indicates Engine Coolant Temperature Circuit Range / Performance Problem.
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 4,221

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 P0116 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 P0116 Scion - Engine Coolant Temperature Circuit Range / Performance Problem - AutoCodes.com — P0116 Scion Code - Engine Coolant Temperature Circuit Range / Performance Problem

What does this mean?

What are the Possible Causes of the DTC P0116 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 P0116 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 P0116 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 P0116 Scion code?

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Information for Specific Scion Models

P0116 2005 Scion xB — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2006 Scion xB — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2007 Scion xB — Engine Coolant Temperature Circuit Range/Performance Problem

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 P0116 Scion Code

1. What does the OBDII code P0116 mean on a Scion?

P0116 indicates a problem with the Engine Coolant Temperature (ECT) sensor, where the sensor's readings are outside the expected range during engine operation.

2. What are the common symptoms of code P0116 in a Scion?

Symptoms may include difficulty starting the engine, poor fuel economy, rough idling, an overheating engine, or the check engine light turning on.

3. What causes the P0116 code to appear in a Scion?

Common causes include a faulty ECT sensor, wiring or connector issues, a stuck thermostat, low coolant levels, or issues with the engine control module (ECM).

4. Can I drive my Scion with a P0116 code?

While it may be possible to drive, itâ€™s not recommended since the engine may overheat or run inefficiently, potentially causing further damage.

5. How do I fix the P0116 code on my Scion?

Repairs may include replacing the ECT sensor, checking and repairing wiring or connectors, replacing a stuck thermostat, or refilling the coolant to the proper level.

6. How do I diagnose the P0116 code on a Scion?

Start by checking the coolant level, inspecting the ECT sensor and its wiring, and using a scan tool to check the temperature readings from the sensor compared to actual coolant temperature.

7. Can a low coolant level trigger the P0116 code in a Scion?

Yes, low coolant levels can cause inaccurate temperature readings, leading to the P0116 code.

8. How much does it cost to repair a P0116 code on a Scion?

Repair costs vary but typically range from $50 to $150 for parts like an ECT sensor or thermostat, plus labor costs if performed by a mechanic.

9. Can a faulty thermostat cause the P0116 code in a Scion?

Yes, a thermostat stuck open or closed can lead to abnormal engine temperatures, triggering the P0116 code.

10. How can I prevent the P0116 code from appearing in my Scion?

Regular maintenance, such as checking coolant levels, inspecting the cooling system, and replacing worn components like the thermostat or ECT sensor, can help prevent the P0116 code.