What causes code 172 on a 92 ford

The OBD code 172 is set when the computer detects a problem with the vehicle speed sensor (VSS). The VSS is responsible for sending the computer information about the vehicle's speed. This information is used by the computer to control the engine and transmission.

There are a few things that can cause the OBD code 172 to be set. These include:

* A problem with the VSS itself

* A problem with the wiring to the VSS

* A problem with the computer

If you are experiencing the OBD code 172, it is important to have it diagnosed by a qualified technician. They will be able to determine the cause of the code and recommend the necessary repairs.

Here are some of the symptoms that may be associated with the OBD code 172:

* The speedometer may not work

* The cruise control may not work

* The transmission may not shift properly

* The engine may stall or hesitate