My car is having engine misfire problem when start. The mechanic put te OBD II equipment detector and showed following codes ( PO131, PO303, PO174, PO301,PO302,PO300, and PO313). He check all the coils and were good , replace all the sparkplugs and the oxygen sensor and motor running improves a lot. But still showing the code PO131.What it could be?
Jun 19, 2013 at 6:37 AM
