OK, more info. I just powered up my ECU and the temp showed -7 degrees C. That can't be right as it is nearly 30 degrees C in my shop right now. So I reset the temp to 30 degrees C....

So, I go to the test menu, #5 temp sensor.... and it gives two readings:

AMB:29C 457
TMP:29C 104

What is that telling me? The book says TMP: detected ambient temperature and AMB: Compensated ambient temperture. So, what are the 457 and 104 numbers?

If those are temps in C 104C = 219F and 457C = 854F , Seems high for ambient numbers????

Also, just so you know The ECU is version 5.2.


I am beginning to think it is a temp sensor.