This error code has been up since Wed. Tonight, Sat, after we have dinner out I go to start the truck. The truck misfires upon start-up (note: this happens every once in a while; LR tech says it has something to do with the magnet in the stem of the steering wheel) & when I re-start the truck, wouldn't you know, the service engine light soon is now gone. Turned it on/off a few times; not on. WTF?