I have read the posts regarding this issue. I had my 04 V6 in the shop yesterday for the gold-filled oil change ($130 USD) and asked about the error message. The dealer charged me another $100 to hook her up to the computer that told them that YES indeed I had a problem, but could not tell them where the problem was. So dealer explained it would take another 3-4 hours ($84/hr) to work through the wiring to diagnose the issue. Does this sound right?