Sensor

Diagnostic fault codes never say to replace parts or that one is bad. They only indicate the circuit or system that needs further diagnosis. First you have to rule out grounded or cut wires, stretched or corroded connector terminals, and things like that. Also, I cannot remember for sure, but you might have two speed sensors.

The next step is to watch the sensor reading on a scanner during a test-drive. That can provide a clue to the cause of the problem, but you have to have access to a scanner.