AutoCodes – Toyota – P0116 2018 Toyota RAV4

P0116 2018 Toyota RAV4 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 2018 Toyota RAV4 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 452

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 2018 Toyota RAV4 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 2018 Toyota RAV4 - Engine Coolant Temperature Circuit Range / Performance Problem - AutoCodes.com — P0116 2018 Toyota RAV4 Code - Engine Coolant Temperature Circuit Range / Performance Problem

What does this mean?

What are the Possible Causes of the DTC P0116 2018 Toyota RAV4?

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 2018 Toyota RAV4?

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 2018 Toyota RAV4 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 2018 Toyota RAV4 code?

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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 P0116 2018 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P0116 in a 2018 Toyota RAV4?

The common symptoms of OBDII code P0116 in a 2018 Toyota RAV4 include inaccurate temperature gauge readings, engine overheating, poor fuel economy, and potential stalling.

2. What are the possible causes of the Engine Coolant Temperature Circuit Range/Performance Problem in a 2018 Toyota RAV4?

Possible causes of the P0116 code in a 2018 Toyota RAV4 include a faulty engine coolant temperature (ECT) sensor, damaged wiring or connectors in the ECT circuit, low coolant level, or issues with the cooling system.

3. How can I diagnose the Engine Coolant Temperature Circuit Range/Performance Problem in my 2018 Toyota RAV4?

Diagnosing the P0116 code involves using an OBDII scanner to retrieve the code, checking the ECT sensor's resistance with a multimeter, inspecting the wiring and connectors for damage, and ensuring the cooling system is functioning properly.

4. Can I still drive my 2018 Toyota RAV4 with the P0116 code present?

It is not recommended to drive your 2018 Toyota RAV4 with the P0116 code present, as it can lead to engine overheating, potential damage, and poor performance. It is best to address the issue promptly.

5. How do I repair the Engine Coolant Temperature Circuit Range/Performance Problem in my 2018 Toyota RAV4?

To repair the P0116 code in a 2018 Toyota RAV4, you may need to replace the faulty ECT sensor, repair or replace damaged wiring or connectors, ensure the cooling system is topped up with the correct coolant, and clear the code with an OBDII scanner.

6. Are there any DIY tips for addressing the P0116 code in a 2018 Toyota RAV4?

While some basic diagnostics can be done at home, addressing the P0116 code may require technical expertise. It is advisable to consult a qualified mechanic for a proper diagnosis and repair.

7. How much does it typically cost to fix the Engine Coolant Temperature Circuit Range/Performance Problem in a 2018 Toyota RAV4?

The cost of fixing the P0116 code in a 2018 Toyota RAV4 can vary depending on the root cause of the issue, parts needed for replacement, and labor costs. It is recommended to obtain quotes from different repair shops.

8. Can a low coolant level trigger the P0116 code in a 2018 Toyota RAV4?

Yes, a low coolant level can trigger the P0116 code in a 2018 Toyota RAV4 as it affects the accuracy of the engine coolant temperature sensor readings, leading to performance issues and triggering the code.