BMW O2 sensors went out?

Well I ran over a long piece of wood in the middle of the street the other day. Nothing really happened.. except the track on my CD skipped for about 10 seconds. The next morning, the ''check engine'' light comes on so I ask a friend and he says its probably the O2 sensors that went out. What does this mean and do I need to fix or replace the sensors? The check engine light went out a few hours after they came on, so does that mean there is nothing wrong anymore?

BMW O2 sensors went out?virus protection software

No, the ''check engine'' light can mean one of several hundred different fault codes, not all are related to O2 sensors. The only way to find out for sure is to have the fault code read with an OBD-II scanner or BMW fault code scanner. Even if the ''check engine'' light went away, the fault code is still stored and can be retrieved by said scanner.

However, considering that you said it was a long piece of wood, i doubt that any of that wood hit the O2 sensors or related wire harness. So, my best guess is that it has nothing to do with the O2 sensors.

On the other hand, you mention that your CD skipped and took a while to come back. This to me indicates that it was a pretty good jolt. What I think is more likely, is that possibly the ground cable or power cable to the battery came slighty loose during this jolt. When that happens, your ignition system isn't able to get the power it needs to operate properly. You then get misfires in the cylinders. If there are enough misfires detected, the ''check engine'' light will illuminate. It is possible that since then, the battery terminal cables have ''fallen back in place'' so the misfires are gone and after a few hours of normal driving, the check engine light went out.