Quote:
Originally Posted by mdmm
Thanks for nice reply and advice.But now I am very confused because all 3 codes, "" PO441,PO446,Po401."" came back after one week.So what to do what not to change.
EGR modulator or VSV valve or what.How much they cost ??
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you have 2 different problems
1: P0401 is for the EGR problem, replace the EGR VSV and modulator
2: p0441/p0446 is a EMMISSION PROBLEM. Replace the VSV on the air cleaner box per the attachment I provided above.
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