P0718 – OBD-II DTC

OBD-II DTC P0718 – Input/Turbine Speed Sensor Circuit No Signal

DTC P0718 meaning

DTC P0718 refers to a problem with the Input/Turbine Speed Sensor Circuit, indicating that the Engine Control Module (ECM) is not receiving a signal from the turbine speed sensor. This sensor is crucial for monitoring the rotational speed of the transmission’s input shaft, which helps the ECM manage transmission functions effectively.

DTC P0718 symptoms

Common symptoms associated with DTC P0718 may include:

• Illuminated check engine light
• Transmission slipping or erratic shifting
• Delayed engagement when shifting from park to drive
• Reduced fuel efficiency
• Transmission overheating

DTC P0718 causes

Several factors can lead to the occurrence of DTC P0718, including:

• Faulty input/turbine speed sensor
• Wiring issues, such as shorts or open circuits
• Corroded or loose electrical connectors
• Faulty Engine Control Module (ECM)
• Transmission fluid issues, such as low levels or contamination

DTC P0718 seriousness

DTC P0718 is considered a serious issue as it can lead to improper transmission operation. If left unaddressed, it may result in:

• Increased wear and tear on transmission components
• Potential transmission failure
• Unsafe driving conditions due to erratic shifting

How to diagnose DTC P0718

To diagnose DTC P0718, follow these steps:

1. Use an OBD-II scanner to confirm the DTC and check for any related codes.
2. Inspect the input/turbine speed sensor and its wiring for damage or disconnection.
3. Test the sensor’s resistance and voltage output according to manufacturer specifications.
4. Check the electrical connectors for corrosion or loose connections.
5. Examine the transmission fluid level and condition.
6. Perform a visual inspection of the ECM for any signs of damage.

How to fix DTC P0718 step-by-step instructions

To fix DTC P0718, follow these steps:

1. Repair or replace any damaged wiring or connectors related to the input/turbine speed sensor.
2. If the sensor is faulty, replace it with a new one.
3. Ensure that the transmission fluid is at the correct level and is clean replace if necessary.
4. Clear the DTC using an OBD-II scanner.
5. Test drive the vehicle to ensure the issue is resolved and the check engine light does not reappear.

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