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Transmission Speed Sensor Cost
and Replacement

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VSS Replacement

After an OBD II scan you learn that your input or output vehicle speed sensor (VSS) has malfunctioned and needs to be replaced.  You can take your car to the repair shop or dealership and spend between $100 and $250 or more to have one speed sensor replaced or you can replace the sensor yourself for a fraction of the cost.

The DIY cost for replacing a speed sensor is the cost of the sensor.  Depending on the vehicle year, make and model, a speed sensor can cost as little as $7.92 or as much as $100.  For most vehicles, the cost for a speed sensor is between $25 and $45.  

Speed Sensor Replacement

Follow these procedures for replacing a faulty vehicle speed sensor (VSS).  The same removal and installation instructions apply for both the input and output speed sensor.

CAUTION: When replacing the new speed sensor be sure the O-ring on the new sensor is correctly fitted on the sensor before installation.

Note: Input and output speed sensors are not interchangeable.

Speed Sensor Replacement Procedures Begin Here

Removal of faulty sensor

1) Loosen and remove negative battery cable.

2) Locate the faulty speed sensor and disconnect the speed sensor connector.

Note: On older vehicles and vehicles driven in harsh weather, be especially careful when disconnecting the plastic electrical connector from the sensor as they break/crack quite easily.

3) Unscrew and remove the sensor.

4) Check the connector wiring to insure there are no breaks or exposed wire.  It is best to replace a broken connector but not absolutely necessary as long as the connector fits tightly onto the sensor.  Use electrical tape to repair any exposed wires.

Installation of new sensor

5) Verify O-ring is installed on new sensor.

6) Install and tighten new sensor.  CAUTION: These sensors can break easily – do not over-tighten.

7) Connect speed sensor electrical connector.

8) Connect and tighten negative battery cable.ng pawl involves removing the transmission from the vehicle and opening up the case to access the pawl.  Thus, the cost to replace a parking pawl is high.  A good deal on replacing a parking pawl is any price under $500.  But, depending on the year, make and model of your vehicle, the cost can exceed $1,000.

After replacing the speed sensor, the Diagnostic Trouble Code that caused the check engine light to illuminate should clear itself, which will turn the check engine light off.  If the check engine light does not turn off, have the computer scanned again to see if there is a different code set.

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