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Simply disconnecting battery might not reset the code. Emissions codes are sometimes stored due to fraud when getting inspected so manufacturers of some models make it difficult to erase without scanner.
Clear with scanner then see if codes come back after reconnecting vacuum line.
Error lights wen out after I connected the little hose where it was suppose to be and everything seemed fine. I even went to autozone and checked for codes a couple weeks later.
But today, for unknown to me reason, they are back on...
Gonna run to autozne and check the codes, but have a feeling they're the same. So the plan is to clean the filter, clean the MAF censor and go through disconnect the battery process again. I checked all the hoses and all are tight and in place, so don't know what is it now.