Automatic Transmission Speed Sensors

Replacement Parts > Transmission Replacements > Sensors

Automatic Transmission Speed Sensors

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What is an Automatic Transmission Speed Sensor?

An Automatic Transmission Speed Sensor is a device found in most vehicles with an automatic transmission. It measures the speed of the transmission's input shaft and sends the information to the vehicle's computer.

What is the purpose of an Automatic Transmission Speed Sensor?

The purpose of an Automatic Transmission Speed Sensor is to monitor the speed of the transmission and relay this information to the vehicle's computer, which can then adjust the shift points accordingly.

How do I know if my Automatic Transmission Speed Sensor is faulty?

You can check for signs that your Automatic Transmission Speed Sensor is faulty if you notice any of the following: your transmission shifts too late or too early; your transmission slips in and out of gears; or your transmission is slow to engage.

Can a faulty Automatic Transmission Speed Sensor cause damage?

Yes, a faulty Automatic Transmission Speed Sensor can cause damage to your transmission if it is not replaced in a timely manner. It can cause the transmission to shift erratically, causing unnecessary wear and tear on the gears and other components.

How do I replace an Automatic Transmission Speed Sensor?

To replace an Automatic Transmission Speed Sensor:

  1. Locate the faulty sensor and disconnect the wiring harness.
  2. Remove the faulty sensor from the transmission.
  3. Install the new sensor and reconnect the wiring harness.
  4. Re-attach the air intake tube and other components.
  5. Start the engine and check for any warning lights.


How often should I inspect my Automatic Transmission Speed Sensor?

It is recommended to inspect your Automatic Transmission Speed Sensor on a regular basis. This should be done at least once a year, or whenever you have your transmission serviced.