Solved: po 420 this is the code that showed up. how do i What do these codes mean po128, po300, and po440? What is a po456 code mean and what to do to fix it?2003 hyundai elantra
P0456 - OBD II Trouble Code: Small Leak Detected in EVAP System
Code hyundai elantra mean fix 2003 do
Code p0171 po171 when obd car fixing ii fix diagnostic hesitation bank lean system fuel too
P0420 code. how to fix it. don't spent spend tons of $$$.Fixing a hesitating car p0171 code Evap system emission evaporative leak code control p0456 canister detected fuel valve vent purge small air ford tank located obd.
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