Hi everyone, I have 08' altima 3.5SE bought few month ago . Got engine oil pressure light for few days. First it came on month ago then disappear after a week. nd came back after 2 weeks again now it not going it flickers some time or remain still. I take it to mechanic. no error code found. No oil leak . no low level oil. nothing issue , the mechanic could try to change oil pressure switch but not sure that will help. any idea , can it appear cause of tranny issue or gas tank issue..