2009 Toyota Yaris Q&A
2009 Toyota Yaris Question: My 2009 toyota yaris was scanned and it said that cylinder 3 is misfiring.
Most likely causes: spark plug has fouled and needs replaced or ignition coil has gone bad and needs replaced. Being that it is a 2009, I would change the spark plugs and see if that clears up the problem. How many miles on this vechicle? - csubak30