On our 2006 Toyota Prius, the malfunction indicator lamp (MIL) is on solid, also known as the check engine light. The car is only 1 year, 2 months old, and "only" has 46,000 miles. I'm headed to AutoZone after I type this to try and get a read out on what I assume to be an emissions related code, but in the meantime I'm wondering if this is a common occurance among the Prius Chat user base (like HID headlights going out on the blink, literally). A search found a 2004 Prius owner with a MIL solidly on, and as the story unfolds, he was given an intriguing run around by the dealer, who first told him that it was the fuel filler pipe assembly part that needed to be replaced to the customer pay tune of $850.00. After he checked online here, as well as his Federal emissions warranty booklet, it turns out that the part in question may have been covered under the extended statutory emissions warranty. Once he presented this information to the dealership, the dealership immediately changed it's tune and said the problem was the intank fuel pump that needed to be replaced, which is specifically excluded from the emissions warranty. This kind of run around is just what I fear, and if possible, I could use some links to threads I may have missed where other 2004-2007 owners may have experienced a MIL, and what the root cause may have been, so I can narrow down the possibilities to the most likely cause. Thanks in advance.