AutoCodes – Mazda – P0119 Mazda

P0119 Mazda Code - Engine Coolant Temperature Signal Intermittent

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: P0119 Mazda indicates Engine Coolant Temperature Signal Intermittent.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 5,519

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0119 Mazda 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 P0119 Mazda - Engine Coolant Temperature Signal Intermittent - AutoCodes.com — P0119 Mazda Code - Engine Coolant Temperature Signal Intermittent

What does this mean?

What are the Possible Causes of the DTC P0119 Mazda?

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 electrical circuit poor connection

How to Fix the DTC P0119 Mazda?

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 P0119 Mazda 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 P0119 Mazda code?

Need more information on how to fix the P0119 Mazda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0119 Mazda code diagnosed by a professional: Find a repair shop in your area

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 P0119 Mazda Code

1. What are the common symptoms of OBDII code P0119 in a Mazda?

- Common symptoms include engine overheating, inaccurate temperature gauge readings, poor fuel efficiency, and potential stalling or rough idling.

2. What can cause the OBDII code P0119 in a Mazda?

- Potential causes include a faulty engine coolant temperature (ECT) sensor, damaged wiring or connectors related to the ECT sensor, low coolant levels, or issues with the engine's cooling system.

3. How can I diagnose the OBDII code P0119 in my Mazda?

- You can diagnose the code by using an OBDII scanner to retrieve the code and then checking the ECT sensor's wiring and connections, testing the sensor's resistance, and inspecting the cooling system components.

4. Is it safe to drive my Mazda with OBDII code P0119?

- It is not recommended to drive your Mazda with this code present, as it can lead to potential engine damage due to incorrect temperature readings and improper cooling system functionality.

5. How can I repair OBDII code P0119 in my Mazda?

- Repair options include replacing the faulty ECT sensor, repairing or replacing damaged wiring or connectors, ensuring proper coolant levels, and addressing any cooling system issues identified during diagnosis.

6. Can a DIY enthusiast fix OBDII code P0119 in a Mazda?

- Some aspects of diagnosing and repairing this code can be tackled by experienced DIY enthusiasts, such as checking connections and replacing the ECT sensor. However, complex cooling system issues may require professional assistance.

7. Will resetting the OBDII code P0119 in my Mazda make it go away permanently?

- Simply resetting the code without addressing the underlying issue will not make it disappear permanently. The root cause of the problem needs to be identified and resolved to prevent the code from reoccurring.

8. How long does it typically take to repair OBDII code P0119 in a Mazda?

- The repair time can vary depending on the specific cause of the code and the complexity of the repair. It can range from a quick sensor replacement to a more involved troubleshooting process involving the cooling system.

9. Can a malfunctioning thermostat cause OBDII code P0119 in a Mazda?

- Yes, a malfunctioning thermostat can cause incorrect engine temperature readings, which may trigger the P0119 code. It is recommended to check and replace the thermostat if necessary during diagnosis.

10. Are there any preventive measures to avoid OBDII code P0119 in a Mazda?

- Regular maintenance of the cooling system, checking coolant levels, monitoring engine temperature, and promptly addressing any cooling system issues can help prevent the occurrence of the P0119 code.