what's wrong?

What is your question?

yesterday went to start the jeep with the auto starter.It started up normally. It suddenly made a loud noise that sounded close to a backfire.Then the car stopped and didn't start up.Tried again and it started.Then smelled a burning smell like fire.I left the car and saw a white smoke 10 minutes after at the windsheild. Smelled the burning until we turned the heat off. Then the jeep ran normally until the check engine light came on two hours later with an error code P1294. any idea what's wrong?Their no no high levels on the meters and unless I put the heater on no burning smell.