what does the check engine light indicate

Hello, there are many possible causes of you having a check engine light come on for your PT Cruiser. Unfortunately, no suggestion or guesswork makes any sense to offer because it could literally be in one of several areas -- and it even could be more than one thing causing the light to come on. Simply put, anything that causes the engine to be inefficient, perform poorly and as a result create excessive amounts of emissions into the atmosphere will cause the check engine light to come on. So, this could be an emissions controls component, a fuel vapor evaporative emissions system component, a fuel and air mixture ratio component, an ignition or fuel system component, a base engine component, an air intake component and much more. Hands on diagnostic testing performed by a skilled technician near you is needed. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops