AutoCodes – Mazda – P0116 Mazda

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

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: P0116 Mazda indicates Engine Coolant Temperature Circuit Range/Performance Problem.
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 9,079

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 Sep 07, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0116 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. The Diagnostic Trouble Code (DTC) will be set when the coolant temperature signal sent to the ECM is not within the specified range.

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

What does this mean?

What are the Possible Causes of the DTC P0116 Mazda?

Low engine coolant level
Faulty Engine Coolant Temperature (ECT) sensor
Faulty engine coolant thermostat
Engine Coolant Temperature sensor harness is open or shorted
Engine Coolant Temperature sensor circuit poor electrical connection

How to Fix the DTC P0116 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 P0116 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 P0116 Mazda code?

Need more information on how to fix the P0116 Mazda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0116 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 P0116 Mazda Code

1. What are the common symptoms of OBDII code P0116 in a Mazda?

The common symptoms of OBDII code P0116 in a Mazda include engine overheating, rough idling, poor fuel economy, and the Check Engine Light illuminating.

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

Potential causes of OBDII code P0116 in a Mazda include a faulty engine coolant temperature sensor, a damaged or corroded wiring harness, a malfunctioning thermostat, or issues with the engine's cooling system.

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

To diagnose OBDII code P0116 in a Mazda, you can use an OBDII scanner to read the trouble code and check the engine coolant temperature sensor's resistance using a multimeter. Inspecting the wiring connections and the cooling system can also help pinpoint the issue.

4. Can I drive my Mazda with OBDII code P0116?

It is not recommended to drive your Mazda with OBDII code P0116 for an extended period as it can lead to engine overheating and potential damage. It is best to address the issue promptly to avoid further complications.

5. How can I repair OBDII code P0116 in my Mazda?

Repairing OBDII code P0116 in a Mazda may involve replacing the engine coolant temperature sensor, repairing or replacing damaged wiring, checking and replacing the thermostat if necessary, and ensuring the cooling system is functioning correctly.

6. Will resetting the Check Engine Light resolve OBDII code P0116 in my Mazda?

Simply resetting the Check Engine Light will not resolve OBDII code P0116 in a Mazda. The underlying issue causing the code needs to be diagnosed and repaired to prevent the code from reoccurring.

7. What impact does OBDII code P0116 have on the engine's performance?

OBDII code P0116 can negatively impact the engine's performance by causing it to run inefficiently, potentially leading to overheating, reduced fuel efficiency, and overall poor engine operation.

8. How much does it typically cost to fix OBDII code P0116 in a Mazda?

The cost of fixing OBDII code P0116 in a Mazda can vary depending on the cause of the issue, labor costs, and parts needed. It is advisable to consult with a mechanic or dealership for an accurate estimate.

9. Are there any preventive measures to avoid OBDII code P0116 in a Mazda?

Regular maintenance of the cooling system, including checking coolant levels, replacing worn-out components timely, and addressing any engine temperature irregularities promptly, can help prevent OBDII code P0116 in a Mazda.

10. Can OBDII code P0116 in a Mazda cause long-term damage if left unresolved?

If left unresolved, OBDII code P0116 in a Mazda can potentially cause long-term engine damage due to overheating and inefficient operation. It is crucial to address the issue promptly to prevent costly repairs down the line.