hey guys, recently have check engine light issue after long drive. driving midway on highway and check engine light came out. car was running fine and did not have any signs or feeling or jerks, constraints, etc. i remember having tps issue before as the connection was loose before. Now the connection is good and still cant figure out the check engine light issue. Air flow sensor seems fine, just havent cleaned it cause i dont know where to get the cleaner. Spark plugs havent checked, injectors also havent checked, but dont feel like the engine is hesitating either. any idea whats going on?