you need a scanner.there's many cheap "[obd2] scanners out there. or you can go to autozone and they scan it for free.
The 2009 Dodge Grand-Caravan has a V6 engine.
The 2006 Dodge Grand-Caravan has a V6 engine.
The 2001 Dodge Grand-Caravan has a V6 engine.
The 2013 Dodge Grand-Caravan has a V6 engine.
The 2007 Dodge Grand-Caravan has a V6 engine.
The 2012 Dodge Grand-Caravan has a V6 engine.
The 2011 Dodge Grand-Caravan has a V6 engine.
The 2010 Dodge Grand-Caravan has a V6 engine.
The 2008 Dodge Grand-Caravan has a V6 engine.
The 2002 Dodge Grand-Caravan has a V6 engine.
The 2014 Dodge Grand-Caravan has a V6 engine.
The 2004 Dodge Grand-Caravan has a V6 engine.