There is a whole book on the problems that could be wrong. When my light comes on, I take it to Auto Zone and they pull the Trouble Codes for me. It gives me a good idea of whats wrong. However Auto Zone can only pull the codes from a car that is OBD II, so almost any car 1996 or newer.
There could be several reasons why a Nissan Sentra service engine light is coming on. The car may need an oil change, tune up, or there could be a major engine problem.
The 2004 Nissan Sentra has an inline 4 engine.
The 2013 Nissan Sentra has an inline 4 engine.
The 2003 Nissan Sentra has an inline 4 engine.
The 2002 Nissan Sentra has an inline 4 engine.
The 2012 Nissan Sentra has an inline 4 engine.
The 2001 Nissan Sentra has an inline 4 engine.
The 2011 Nissan Sentra has an inline 4 engine.
The 2010 Nissan Sentra has an inline 4 engine.
The 2009 Nissan Sentra has an inline 4 engine.
The 2007 Nissan Sentra has an inline 4 engine.
The 2008 Nissan Sentra has an inline 4 engine.