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P0718 Mazda Code - Input/Turbine Speed Sensor Circuit Intermittent

Quick Answer

The P0718 code for Mazda vehicles indicates an issue with the Input/Turbine Speed Sensor Circuit being intermittent. Common causes include Faulty Input/Turbine Speed Sensor, Damaged wiring or connectors in the sensor circuit, Loose connections. 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
P0718 Mazda indicates Input/Turbine Speed Sensor Circuit Intermittent.
Common causes
Common causes include Faulty Input/Turbine Speed Sensor, Damaged wiring or connectors in the sensor circuit, Loose connections.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0718 Mazda Description

The P0718 code for Mazda vehicles indicates an issue with the Input/Turbine Speed Sensor Circuit being intermittent. The Input/Turbine Speed Sensor is responsible for monitoring the speed of the input shaft to the transmission and the turbine shaft within the torque converter. This information is crucial for the transmission control module to determine the optimal shift points and ensure smooth gear changes. An intermittent signal from this sensor can lead to erratic shifting, transmission slipping, and other drivability issues.

OBDII Code P0718 Mazda - Input/Turbine Speed Sensor Circuit Intermittent
P0718 Mazda Code - Input/Turbine Speed Sensor Circuit Intermittent

Common Causes of P0718 Mazda

  1. Faulty Input/Turbine Speed Sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Loose connections
  4. Malfunctioning transmission control module
  5. Corrosion in the sensor circuit

Symptoms of P0718 Mazda

  1. Erratic or harsh shifting
  2. Transmission slipping
  3. Limp mode activation
  4. Decreased fuel efficiency
  5. Illuminated Check Engine Light

How to Fix P0718 Mazda

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific fault code and confirm the issue.
  2. Inspect the wiring and connectors in the Input/Turbine Speed Sensor circuit for any damage or corrosion. Repair or replace as necessary.
  3. Test the Input/Turbine Speed Sensor for proper operation using a multimeter. Replace the sensor if it fails the test.
  4. Clear the fault code from the vehicle's memory using the diagnostic scanner and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to pinpoint the exact cause of the intermittent signal.

Cost to Fix P0718 Mazda

The typical repair costs for addressing a P0718 code on a Mazda vehicle can range from $200 to $500, including parts and labor. However, it's important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops commonly charge between $80 and $150 per hour for labor. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's advisable to check local rates for a more precise estimate.

When is the Code Detected?

Diagnostic Trouble Code (DTC) P0718 is detected when TCM or ECM receives and intermittent signal from the sensor.

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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 P0718 Mazda Code

1. What are the common symptoms of OBDII code P0718 in a Mazda related to the Input/Turbine Speed Sensor Circuit Intermittent issue?

- Common symptoms include erratic shifting, sudden loss of power, transmission slipping, and in some cases, the vehicle may go into limp mode.

2. What are the possible causes of OBDII code P0718 in a Mazda?

- The main causes of this code include a faulty input/turbine speed sensor, damaged wiring or connectors in the sensor circuit, or issues with the transmission control module.

3. How can I diagnose the Input/Turbine Speed Sensor Circuit Intermittent issue in my Mazda?

- To diagnose this problem, you can use an OBDII scanner to read the trouble code and then perform a visual inspection of the sensor and its wiring. You may also need to perform electrical tests to pinpoint the exact cause.

4. Can I continue driving my Mazda with OBDII code P0718 present?

- It is not recommended to drive your vehicle with this code present, as it can lead to further damage to the transmission and potentially leave you stranded on the road.

5. How can I repair the Input/Turbine Speed Sensor Circuit Intermittent issue in my Mazda?

- The repair usually involves replacing the faulty input/turbine speed sensor, repairing or replacing damaged wiring or connectors, and clearing the trouble code with an OBDII scanner.

6. Is it possible to reset OBDII code P0718 in a Mazda without fixing the underlying issue?

- While you can clear the trouble code with an OBDII scanner, the code is likely to return if the root cause of the problem is not addressed.

7. How much does it typically cost to repair OBDII code P0718 related to the Input/Turbine Speed Sensor Circuit Intermittent in a Mazda?

- The cost of repairs can vary depending on the specific cause of the issue, but it typically ranges from $100 to $300 for parts and labor.

8. Will OBDII code P0718 cause my Mazda to fail an emissions test?

- Yes, having this code present can cause your Mazda to fail an emissions test, as it indicates a problem with the transmission system.

9. Can a DIY enthusiast fix OBDII code P0718 in a Mazda at home?

- While some experienced DIY enthusiasts may be able to diagnose and repair this issue at home, it is recommended to seek professional help, especially when dealing with transmission-related problems.

10. How long does it take to repair OBDII code P0718 in a Mazda?

- The repair time can vary depending on the exact cause of the issue and the extent of the repairs needed, but it typically takes a few hours to a full day to complete the repair.

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