AutoCodes – Toyota – P0115 2014 Toyota RAV4

P0115 2014 Toyota RAV4 Code - Engine Coolant Temperature Circuit Malfunction

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
P0115 2014 Toyota RAV4 indicates Engine Coolant Temperature Circuit Malfunction.
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 381
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 23, 2022
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Code P0115 2014 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 P0115 2014 Toyota RAV4 - Engine Coolant Temperature Circuit Malfunction - AutoCodes.com
P0115 2014 Toyota RAV4 Code - Engine Coolant Temperature Circuit Malfunction

What are the Possible Causes of the DTC P0115 2014 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 P0115 2014 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0115 2014 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.

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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 P0115 2014 Toyota RAV4 Code

1. What does the OBDII code P0115 mean on a 2014 Toyota RAV4?

The P0115 code indicates an Engine Coolant Temperature (ECT) Circuit Malfunction, meaning the engine control module (ECM) has detected an issue with the ECT sensor or its circuit.

2. What are the common symptoms of code P0115 on a 2014 Toyota RAV4?

Symptoms may include a check engine light, poor fuel economy, engine overheating, hard starting, or irregular temperature gauge readings.

3. What causes the P0115 code to trigger on a 2014 Toyota RAV4?

Common causes include a faulty ECT sensor, damaged wiring or connectors, a malfunctioning ECM, or low coolant levels.

4. Can I still drive my 2014 Toyota RAV4 with a P0115 code?

While the vehicle may still be drivable, it's not recommended since the issue can lead to poor engine performance and potential overheating, which could cause major damage.

5. How do I diagnose the P0115 code on a 2014 Toyota RAV4?

Diagnosis involves checking the ECT sensor and its wiring for damage, testing the sensor with a multimeter, and verifying coolant levels and condition.

6. How can I fix the P0115 code on a 2014 Toyota RAV4?

Repairs may include replacing the ECT sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or addressing low or contaminated coolant.

7. Where is the ECT sensor located on a 2014 Toyota RAV4?

The ECT sensor is typically located near the thermostat housing on the engine.

8. What tools are needed to fix a P0115 code on a 2014 Toyota RAV4?

You may need a digital multimeter, basic hand tools, a scan tool, and possibly a replacement ECT sensor.

9. How much does it cost to repair a P0115 code on a 2014 Toyota RAV4?

Costs vary, but replacing an ECT sensor typically costs between $50 and $200, including parts and labor.

10. Can low coolant levels cause the P0115 code on a 2014 Toyota RAV4?

Yes, low or contaminated coolant can cause improper sensor readings and trigger the P0115 code.

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