Ford focus 2000 changing pvc valve due to error code p0171 Ford focus code p0171 Mk1 p0171
FORD CODE P0171 SYSTEM TOO LEAN BANK 1. EASY FIX - YouTube
Mk1 2004 focus 1.6 with p0171 code
Ford focus code p0171 system too lean fix 2011 2012 2013 2014 2015 2016
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