Question about 2003 Mitsubishi Eclipse Coupe
I have a 2003 eclipse 2.4 liter. Got a code po421 when i took it in for inspection.(po421 is the warm up catalyst efficiency below threshold-bank-1)How do i find out (1- what that is)( 2- how to fix it.)
You have the same engine as my 2003 Galant, this should help... http://www.alldatadiy.com/alldata/AFI~V11366605~C40797~R0~OD~N/0/89012112/98644464/98644470/110938985/34853741/34857029/34857030/34857663/122915129/135964338/135975025
Posted on Mar 01, 2009
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Posted on Jan 02, 2017
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