Thanks for the suggestions guys. This is becoming frustrating because, as much as I have been reading on this C1141 code, I still can not find definitive information on exactly what sensor should be changed on the Master. Guess I will just do one, see what happens, then do the second one. I did order two, but can't even verify if both are the same sensor. on the master. Though they do look alike, but I cannot verify the numbers without removing them. Anyway, I'll let you all know how things go. So far I have not found anything pertinent about this in my 2004 Factory manual , either. But, I could have missed it.