The code you have is correct for that sensor.
It has a connector on top with removable plug, on picture it looks like two internal contacts.
Below this is the little bracket that holds it on, one bolt.
Looks like you remove bolt and pull it up.
Resistance accross the contacts approx 620 ohm
There is another test where you put a meter accross the contacts of the sensor
and place a magnet quickly past the sensor end, a very small intermittent voltage should be generated.
There are other tests involving the engine and ECT ECU, complicated!