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2010 PO448 code, changed vent solenoid but will not clear

1616 Views 2 Replies 3 Participants Last post by  Skibane
2010 Frontier

Threw the PO448 code. Replaced the vent valve solenoid with a new one and reset the check engine light. Was good for a couple days and then back on again.

What else can be checked/cleaned/replaced in an attempt to get rid of this light?

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