P0304 2002 jeep libertyHas any one got this code and what did you do to fix it P0304

Question

Has any one got this code and what did you do to fix it P0304

Answer 1

Hi there,

When the code is only on one cylinder it's usually a faulty coil pack causing the problem. You may also have an issue with the spark plug or a vacuum leak, but the most common issue is the coil.