AutoCodes – Hyundai – P0115 Hyundai

P0115 Hyundai Code - Engine Coolant Temperature Circuit Malfunction

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: P0115 Hyundai indicates Engine Coolant Temperature Circuit Malfunction.
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 17,950

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
Cost to Diagnose
FAQs
Comments
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Code P0115 Hyundai 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 P0115 Hyundai - Engine Coolant Temperature Circuit Malfunction - AutoCodes.com — P0115 Hyundai Code - Engine Coolant Temperature Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0115 Hyundai?

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 P0115 Hyundai?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0115 Hyundai 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 P0115 Hyundai code?

Need more information on how to fix the P0115 Hyundai code? Get Access to Factory Service Manuals

Need Help with the 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 P0115 Hyundai Code

1. What are common symptoms of OBDII code P0115 in a Hyundai indicating Engine Coolant Temperature Circuit Malfunction?

The common symptoms include engine overheating, rough idling, poor fuel economy, and in some cases, the Check Engine light illuminating.

2. What are the typical causes of the OBDII code P0115 in a Hyundai?

Common causes of this code include a faulty engine coolant temperature sensor, issues with the sensor wiring or connectors, low coolant levels, or a malfunctioning engine control module (ECM).

3. How can I diagnose the OBDII code P0115 in my Hyundai?

Diagnosing P0115 involves using a scan tool to read the code, checking the engine coolant temperature sensor and its wiring for faults, inspecting the coolant level, and testing the sensor's resistance.

4. How can I repair the Engine Coolant Temperature Circuit Malfunction in my Hyundai?

Repairing P0115 may involve replacing the faulty engine coolant temperature sensor, repairing or replacing damaged wiring or connectors, ensuring proper coolant levels, or addressing any ECM issues.

5. Can I drive my Hyundai with the OBDII code P0115 present?

It is not recommended to drive your Hyundai with the P0115 code present, as it can lead to potential engine damage, poor performance, and reduced fuel efficiency.

6. Will resetting the Check Engine light resolve the OBDII code P0115 in my Hyundai?

Resetting the Check Engine light may temporarily clear the code, but it will not fix the underlying issue causing the Engine Coolant Temperature Circuit Malfunction. Proper diagnostics and repairs are necessary.

7. How much does it typically cost to repair the OBDII code P0115 in a Hyundai?

The cost of repairing P0115 can vary depending on the specific issue causing the code, but it may range from $100 to $300 for parts and labor.

8. Can a DIY enthusiast fix the OBDII code P0115 in a Hyundai?

Some aspects of diagnosing and repairing P0115 can be tackled by DIY enthusiasts, such as checking sensor connections or replacing the sensor. However, more complex issues may require professional help.

9. What are the long-term consequences of ignoring the OBDII code P0115 in a Hyundai?

Ignoring P0115 can lead to potential engine damage, decreased fuel efficiency, and overall poor vehicle performance. It is essential to address the issue promptly to prevent further issues.

10. Is it necessary to clear the OBDII code P0115 after repairing the issue in my Hyundai?

After repairing the issue causing P0115, it is recommended to clear the code using a scan tool to ensure the Check Engine light does not reappear and to verify that the repair was successful.