AutoCodes – Generic – P0718

P0718 Code - Input/Turbine Speed Sensor Circuit Intermittent

Quick Answer

The Input Speed Sensor detects the primary pulley revolution speed and sends a signal to the Transmission Control Module (TCM) and Engine Control Module (ECM). Common causes include Faulty Transmission Speed Sensor, Transmission Speed Sensor harness is open or shorted, Transmission Speed Sensor circuit poor electrical connection. 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 indicates Input/Turbine Speed Sensor Circuit Intermittent.
Common causes: Common causes include Faulty Transmission Speed Sensor, Transmission Speed Sensor harness is open or shorted, Transmission Speed Sensor circuit poor electrical connection.
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 20,690

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0718 Description

The Input Speed Sensor detects the primary pulley revolution speed and sends a signal to the Transmission Control Module (TCM) and Engine Control Module (ECM). The ECM sets the OBDII code when the Input Speed Sensor is out of factory specifications.

OBDII Code P0718 - Input/Turbine Speed Sensor Circuit Intermittent - AutoCodes.com — P0718 Code - Input/Turbine Speed Sensor Circuit Intermittent

What does this mean?

What are the Possible Causes of the DTC P0718?

Faulty Transmission Speed Sensor
Transmission Speed Sensor harness is open or shorted
Transmission Speed Sensor circuit poor electrical connection

How to Fix the DTC P0718?

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 P0718 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 P0718 code?

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Need Help with the Code?

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Information for Specific Makes

P0718 Acura — Intermittent Failure Input Shaft Speed Sensor
P0718 Ford — Transmission Speed Sensor Noise Interference
P0718 Honda — Intermittent Failure Input Shaft Speed Sensor
P0718 Mazda — Input/Turbine Speed Sensor Circuit Intermittent
P0718 Mercedes-Benz — Input/Turbine Speed Sensor Circuit Intermittent

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.