F4A512LZP Was only used in 2003-2005 Mitsubishi Eclipse GTS with the 3.0 and is the correct transmission you need.
F4A512E6B Was used in the 2000 Eclipse with the 3.0. It has a different ratio for third which is why it is throwing the code.
From the outside the transmission looks exactly alike but they use different gearing.
Friday, January 20th, 2017 AT 1:32 PM