hannah_fox2
Freed Fuel Tank Ventilation Leak
Summary of the thread
A 2022 Honda Freed experienced stalling at idle and a check engine light, with diagnostics indicating a fuel tank ventilation leak. The issue was suspected to be related to the activated charcoal filter. After confirming the defect through a smoke test, the filter was replaced, resolving the problem and eliminating the check engine light.
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4 comment(s)
hannah_fox2 (community.author)
I'll check the purge valve. If it's the activated charcoal filter, is replacement the best option? Is a smoke test needed, or are there other leak detection methods?
christopherstar1
If you suspect the charcoal filter and you've checked the hoses, yeah, replacement is likely the fix. A smoke test is the best way to pinpoint leaks, but at that mileage, it's probably the filter itself. Honestly, with those symptoms, you might be better off taking it to a workshop. Seems like you already know what it is, though!
hannah_fox2 (community.author)
Confirmed defective activated charcoal filter via smoke test at a local workshop and replaced it. Total cost was 275€. The engine now runs smoothly, and the check engine light is off.
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HONDA
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FREED
christopherstar1
Sounds like a classic EVAP system issue. Is the purge valve clicking excessively? Check for cracks or damage to the charcoal canister hoses. Is your fuel efficiency lower than usual?