Automatic Transmission Fluid Temperature Sensors

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Automatic Transmission Fluid Temperature Sensors

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What is an Automatic Transmission Fluid Temperature Sensor?

An Automatic Transmission Fluid Temperature Sensor (ATFTS) is an engine component that monitors the temperature of the automatic transmission fluid. It is typically located in the transmission assembly and is connected to the engine control unit (ECU).

What is the purpose of an Automatic Transmission Fluid Temperature Sensor?

The purpose of an Automatic Transmission Fluid Temperature Sensor is to provide a signal to the ECU that indicates the temperature of the fluid. This allows the ECU to adjust the shifting of the transmission to provide optimal performance.

How do you determine if your Automatic Transmission Fluid Temperature Sensor is faulty?

To determine if your Automatic Transmission Fluid Temperature Sensor is faulty, you will need to check the vehicle’s diagnostic system. If the sensor is not functioning correctly, the code will be displayed on the system.

Can a faulty Automatic Transmission Fluid Temperature Sensor cause damage to other components?

Yes, a faulty Automatic Transmission Fluid Temperature Sensor can cause damage to other components of the vehicle, such as the transmission or the ECU.

How do you replace an Automatic Transmission Fluid Temperature Sensor?

To replace an Automatic Transmission Fluid Temperature Sensor:

  1. Disconnect the negative battery cable.
  2. Remove the transmission pan.
  3. Locate the Automatic Transmission Fluid Temperature Sensor and disconnect it.
  4. Install the new sensor, making sure to use the O-ring provided with the new sensor.
  5. Reinstall the transmission pan.
  6. Reconnect the negative battery cable.


How often should you inspect an Automatic Transmission Fluid Temperature Sensor?

The Automatic Transmission Fluid Temperature Sensor should be inspected every 12,000 miles or as recommended in your vehicle’s owner manual.