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Originally Posted by mazdatech
p1128 when you call dealer have them check your warrenty status they have a tsb on that code it has you check the air flow meter at diffferent rpms to determine the problem it probaly has a bad one i would bet
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Mazdatech and lowsonoma....Thanks for the replies....you're both correct. Local Hyundai dealer found P1128 to be the Mass air flow sensor, then there were 2 other codes...don't remember exact codes, but I believe they ended in 300 and 301. 300 indicated random misfires and 301 indicated cylinder one consistent misfire due to bad plug or wire. The dealer wanted $270.00 for the maf sensor!! ouch!! scouted around...NAPA has them for $105.00. Found one in local salvage yard for $75.00 that has 45K miles on it. Will replace all of the above myself and re-post the final verdict.