A Check Engine light can come on if the EGR ports have clogged.
Car Problem Reports
Honda Accord Check Engine Light on Due to Clogged EGR Ports
Honda Accord Problem
Model Year Affected: 2002
Average Mileage: 125,302 mi (124,000 mi - 126,605 mi)
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dholmes02, 2002 Honda Accord, 126,605 miRookie
**UPDATE**
I took my Honda to the AAA care care center and they removed the intake manifold and cleaned out the EGR ports and replaced all the gaskets. It took 3-4 hours. They reset the codes at that time. I have driven approx 20 miles now and the check engine light has not returned. When the codes were reset in the past the PO401 code would return after only 10-15 miles. So far so good.Code P0401 - EGR Flow insufficient detected. I replaced the EGR valve, PCV valve, air filter and reset code. The code returned after driving 10 miles. AAA mechanic recommended removing intake manifold and cleaning EGR ports. I have not done this yet but will follow-up if that resolves the issue.
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Visitor, 2002 Honda Accord, 124,000 mi
CODE PO401--NOT FIXED YET
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