I was looking for a bolt I dropped and when looking up towards the triple tree I saw a loose white/yellow thin wire with a white label that said "oil P". I assume this is oil pressure. When the ignition is activated the oil warning light comes on but goes off before the engine is started. Does this mean the oil pressure sensor is not communicating to the ECU? Where is the oil pressure sensor?. I would not have noticed the situation unless I saw the loose wire.Thank you in advance for any help.