About a month ago I went on a camping trip. Had about a 30-min long drive on a fairly rough forest road. Had a couple little scrapes in the roughest areas, but nothing too serious. Right as we pulled off of the dirt road back onto the highway the check engine light came on. I assumed that it was a probably a case of some wiring coming loose. When I finely got around to plugging in the computer it read a P0497 "EVAP system low purge flow." Does it seem likely something in the EVAP system would have come loose from the road? I'm not sure where this system is located in the car - where are the most important connections I should check?

 

I believe that I encountered this code in my GK coincidentally shortly after my stupid undertray failed and decided to shovel snow up the whole underside. The dealer claimed that the Krown Rust proofing spray clogged up that canister. The dealer replaced it but the code remained. Then they replaced something else under the hood and the code remained. Afterwards they replaced something else and by that time, so much work was done that Honda Canada told the dealership to not charge me anything.

I've had my car rustproofed still since and removed that tray once and for all. Never seen the code again.