Problem Reports
Honda Civic
Report: Check engine light on due to slow responding two way bypass valve
Honda Civic Problem
Model Year Affected: 2001
Verified
On certain models a slow responding two way bypass valve can cause the Check Engine light (MIL) to illuminate. This ususally occurs in cold weather. Replacing the bypass valve is needed to repair this issue.
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Report #1Visitor, 2001 Honda Civic, 97,000 mi