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2000 Honda Passport PO401 Code: How to Fix EGR Issue for Smog Compliance

Model: 2000 Honda Passport Fault Code: P0401 Posted: 2009-02-04 15:02

I need to pass a smog inspection in the next few days and am looking for a reliable solution to resolve the PO401 code on my 2000 Honda Passport. The check engine light is currently on, and I'm concerned about failing emissions testing. Is there a safe, effective way to fix or bypass the EGR system issue without damaging the vehicle? I want a long-term solution that will pass official emission checks.

Related fault codes

P0401

Comments (4)

Anonymous 2009-02-04 17:36

Clearing the PO401 code temporarily may work, but it won't help if emissions monitors are actively tested during the smog inspection. A more effective fix involves removing the throttle body and inspecting the intake tube about 3 inches in from the base—this area often accumulates carbon buildup. Cleaning this obstruction can resolve the EGR-related PO4001 code and provide a permanent solution.

Anonymous 2009-02-05 09:51

Consider trading in the vehicle instead of attempting repairs, especially if the issue is recurring or costly to fix.

Anonymous 2009-02-05 09:56

What makes you think trading would be a better option than fixing the EGR system?

Anonymous 2009-02-05 11:44

Trading is an option, but it's not ideal if you still want to keep and use your 2000 Honda Passport. A proper repair like cleaning the intake tube may be more practical for long-term emissions compliance.