That code means the EVAP test showed a small leak. The most common cause for it is a bad seal on the gas cap or rust/dirt in the area where the seal contacts the filler neck. I usually just scrub the filler with a dish scrubber and wipe it clean, then apply a thin coat of petroleum jelly to the seal.
The next most common is the control valve in the rear on the charcoal canister. The solenoid valve shaft gets rusted/dirty and causes it to stick. If your scan tool allows bi-directional control of the valves in the EVAP system I have seen good results by simply cycling the valves a few times to clean the crud away.
Both of these can be made worse if the temperatures get cold where you are. The parts get cold and stiff. If the light is off and does not come back, you could leave it. If it comes back with the same code then test the above items.
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Tuesday, February 21st, 2017 AT 12:43 PM