| I had same problem with my truck.I took it in to the dealer for the check engine light and they told me that there was "oil on the sensor" from my K&N filter, so they replaced the sensor and installed a stock filter. No problems since that. Seems to me that they could of possibly just cleaned the oil off. I kept the removed K&N and it didn't look like it was over oiled or had exessive oil on it. |