Good shops in Socal LA/OC to fix engine engine code P0449
 

Good shops in Socal LA/OC to fix engine engine code P0449
Good shops in LA/OC to fix engine engine code P0449
Can anyone recommend a shop or person from this forum that you know is reputable to fix the service engine soon light. The scanner code it displayed is P0449. Napa auto cleared the code and i replaced the gas cap and it came back on. I took it to one shop and they couldn't figure it out and said the canister is operating fine.