Left side when looking at it from the front or left side when sitting in the driver seat? Pictures would be helpful. If it's back passenger side of the engine it could be the VTEC solenoid assembly, oil pressure sensor, or oil filter. You should clean everything really well then start the car and see if you can tell where it's coming from.Hey guys I’m stumped, picked up a 02 rsxs had a small oil leak and wasn’t really hitting vtec, the oil was leaking somewhere behind the left side of the motor
Was it an OEM part or one from a parts store? In my experience these only like OEM sensors.I also had a cel for camshaft position sensor circuit A, I replaced the camshaft sensor
How many miles? You may want to check engine timing.