I installed an ipod interface in the car tonight and accidentally touched a pos to a negative and got a spark.

Could that cause a check engine light to pop up?

I'm going to have it scanned tomorrow.

 

Got the codes read and cleared. Misfire on cylinders 1 and 3. Not sure why, but I did cross a positive and negative wire and got a spark.

Running like a champ, but there is a pulley on the air conditioner pump chirping until she warms up. Annoying. Does that mean it's bad?