Trying to trigger EVAP check. Drive cycle conditions that trigger a PCM EVAP Test?

rtfm17

Member
Hi all,

My fiance has a 99 Protege 1.6L that's been throwing P0455 (EVAP Leak).
I checked and cleared all the hoses to the charcoal canister, etc & put on an OEM gas cap. So far results are inconclusive as it's still thrown the code a few times, and NYS emissions inspection is coming up soon which I'm not looking forward to...

I'm trying to find a reliable drive cycle to get the PCM to rerun the EVAP test. I called the local dealer. They said it won't run until after 100 miles after resetting the PCM and but take up to 40 cold starts to run. (Unfortunately not very helpful there....)

Does anyone have documentation detailing the "drive cycle" (aka road test conditions) that trigger an EVAP check?

Thanks. Any help would be greatly appreciated.
 

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