Check engine light & slip indicator

The check engine light and the slip indicator light came on when I started my truck Christmas day. I was driving the truck the day before and had no warning lights on. Basically they came on overnight while my truck was sitting in my driveway.

I have a 2010 TRD Off-Road package all stock. Any suggestions on where to start or what to look for? I've been reading some things about alignment and YAW sensor calibration. Any help would be appreciated.

 

I'm going to try that this evening to see if I get anything. I'm also going to disconnect battery for a while to see if that resets.

 

Ok. Hooked up the PocketScan Plus and got code P0456. Removed gas cap and then put back and then disconnected negative side of battery and now CEL and slip indicator lights are gone. Not sure why the 2 are related but for now we're good.

 

Had the same thing with my 2011 Tacoma. The anti slip didn't work while the CEL and slip indicator lights were on. Disconnected the negative from the battery for one minute. Anti slip works again. Gas cap is aftermarket I believe...