Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
p2422 code checked for blockage as scanner suggested. Did find a nest 1st cleaned out. light came back replaced canister, vent sol, and tank pressure sensor. ran evap test in snap on scanner, all passed and monitor set to ready. 2 days later light back on same code. also smoke tested evap and tested gas cap all were good
