Hi, is it possible to test these by measuring resistance or similar? The car is showing fault P0715 and I wondered if I could confirm the sensor itself is faulty rather than the circuit elsewhere or even whether it may be due to the common coolant in transmission problem.

If I decide to buy a replacement sensor is there anywhere that someone could recommend that does mail order or online ordering? Also what price should I be looking at? I have emailed a local dealer but they obviously have too much business as they have not replied