First of all, almost every condition that can cause the MIL to illuminate is covered under the 3 year/50000 mile emissions warranty from Honda. the only exceptions are if you left the gas cap off or loose or if there is damage such as a mouse eating through the wiring harness.secondly, I've seen several Pilots that have the VTM-4 light and the Malfunction Indicator Lamp (check engine light) come on for an engine misfire. the misfire reduces the engine power and 'tricks' the pcm into thinking the vehicle is in traction control mode which similarly cuts out cylinders to restore traction. that's why the VTM-4 light comes on. I don't remember if it is the EGR valve or the IAC valve that caused it. Regardless, your Honda dealer should take care of it for free.If you want to know what the code is without buying a code checker or generic scan tool, you can stop by an AAMCO transmission shop as they advertise a free diagnosis. Your honda dealer will probably tell you there's a charge for diagnosis if the repair is not covered under warranty to cover their time. Again, unless you left the gas cap off or a mouse built a nest in the engine compartment, the repairs should be under the 3 year/50000 mile emissions warranty regardless of where you bought the Pilot or if you are a second owner. The warranty is on the vehicle, not the owner. hope that helps