[JS13]

Have a 2006 Accord ex. These 2 codes caused lots of work about 2 months ago. Check engine and check gas cap. Replaced gas car, purge solenoid, charcoal canister, and vent valve. Lights went off and it passed emissions.
About a month later, gas cap light comes on. And 2 months later, check engine light is back with the same codes.
Besides the obvious solution (drive it off a cliff), what else can I replace? Also, there is no leak around the fuel pump. I’ve replaced essentially the entire system.

 

[WDHewson]

I've not suffered an emissions code on either of my Gen7 Accords, 2003 and 2007 L4.

But my 1999 CRV (long ago crushed) would give an emissions code dependent on gasoline vapor pressure properties.

The gas tank pressure sensor was fooled by rapidly changing outdoor temperatures and the consequent rapidly changing fuel vapor pressure in the tank. 'Twas my theory anyway.