What does it mean when my nissan Marino service engine soon comea on after it just recently started running rough and having a ticking sound when inwas ecxelerating

What is your question?

When I drive I hear a ticking sound on my 20004 Nissan marano a has only a 120000 miles on it but as I said it started making a ticking sound In the front right part of the engine then the service light came on After his story running a little bit rough along with the ticking

What makes this problem better or worse?

Letting off the accelerator

How long has your 2004 Nissan Murano had this problem?

Week