Hey Mudder,
The ECU should be powered up when the ignition switch is turned "on", and "seeing" all the sensors. If it got clitched or caught some garbled data, it might just need to be reset. I know I'm just pulling straws out of my butt.... but I would disconnect the battery, wait 5 minutes and reconnect the battery. I realize you may loose your radio settings.
Gnarls.
![In The Dark :inthedark:](https://board.marlincrawler.com/Smileys/marlin/inthedark.gif)