disconnect the battery for a few minutes and/or short the +/- disconnected terminals (all you lose is your clock setting and your radio stations) code readers may do this too but are pricey and tell you things that are not really At Fault
The easiest way to reset the 2001 Toyota check engine light is to remove the check engine light fuse. The fuse can be found in the fuse box.
The 2003 Toyota Sienna has a V6 engine.
The 2013 Toyota Sienna has a V6 engine.
The 2010 Toyota Sienna has a V6 engine.
The 2002 Toyota Sienna has a V6 engine.
The 2006 Toyota Sienna has a V6 engine.
The 2001 Toyota Sienna has a V6 engine.
The 2014 Toyota Sienna has a V6 engine.
The 2007 Toyota Sienna has a V6 engine.
The 2009 Toyota Sienna has a V6 engine.
The 2008 Toyota Sienna has a V6 engine.
The 2005 Toyota Sienna has a V6 engine.