Yesterday afternoon when i was offroading my check engine light came on, so i headed on over to my friends house and he pulled this code for me:
P0158 02 Sensor Circuit High Voltage (Bank 2 Sensor 2)

He didn't know what it meant and neither do i, so i was wondering if anyone here has experienced it and what it was? also, when i started my car this morning the check engine light was no longer on...hmmmm

It's your o2 sensor located under the pass. seat side,Needs replacement.