1999 Chevrolet Lumina
Problem for Chevrolet 1999 Lumina

My check engine light came on, had a diagnostic




By esims38 on Oct 31, 2009

" "
my check engine light came on, had a diagnostic test ran and it said PO440. what does that mean?

Solution #1

posted on Oct 31, 2009
Not Rated)

chuckorr431

Rank: Guide 
Rating: 75%, 1 votes
p0440 is an EVAP error code. It can be as simple as the gas cap not being on right, or the EVAP purge solenoid is no longer working, or the charcoal canister is plugged. Start with the gas cap first..

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