Flickering oil light

Well it could be an oil pressure problem, or a faulty oil pressure switch, or something in the wiring harness.
I would have the oil pressure checked with a mechanical gauge.

The flickering light usually indicates low oil pressure particularly at idle.Check oil quantity. How long since serviced and filter replaced. If these all good have your oil pressure tested with a master gauge. Some issues can be oil pickup slugged up or if high miler engine bearings.

It can be in te instrument cluster. Or the wire that goes to the oil pressure sending unit is shorted

hey, posible cause could be either a faulty oil pressure sensor, oil pump, or main and connecting bearing.

Sounds like you have a bad oil pressure sending unit, the oil pressure sending unit controls your oil pressure gauge, what I would do is remove the oil pressure sender and hook a manual oil pressure gauge up to your engine and verify you have sufficient oil pressure, if you have good oil pressure on your gauge then replace the sending unit, if you have a low reading on the gauge stop your engine immediatly and start looking at a potenial problem with your oil pump or lubricating system within the engine....

Try replacing the oil sending unit. Most of the time its just a case of a bad sending unit. If it still does it then you probably have low oil pressure issues.

Does the oil light flicker only when the engine is 'idling'? Or does it flicker ALL the time? Does it flicker when the engine is cold? Or, only after the engine warms up? Cause could be low oil pressure (check oil level & condition- should be full and clean), could be the oil pressure sending unit going bad, could be electrical (short) in the oil pressure sending unit wire harness, could be sludge buildup in the crankcase clogging the oil pickup tube to the oil pump, or it could be a clogged oil filter or the oil pump is going bad. If you have an after-market oil filter installed, they somtimes rob the system of pressure. There is a Technical Service Bulletin on this for Hyundai Vehicles. You should use the genuine Hyundai Oil filter.
Does the Check Engine light come ON when this happens? Whenever the "Check Engine" light comes on, there is always a DTC (Diagnostic Trouble Code) stored in the ECM (Engine Control Module). You'll need an OBDII (On-Board-Diagnostics) scanner to retrieve any codes recorded/set in ECM. Once you do this and let us know what, if any codes are set, then we can go from there. OR, take/tow the vehicle into a Hyundai Service Center (dealership), pay the diagnostic fee. They will tell you EXACTLY what the problem is and what's needed to fix it (parts, labor, tax, time-frame, etc.). You could also go to http://www.hmaservice.com/ and register (vehicle by VIN). Afterward, you'll have access to technical information (manuals, wiring diagrams, service bulletins, etc) about your vehicle.

HI, i would double check that sending unit for lose or bad connections. make sure the wires are in good condition. if everything checks out ok with the new sender, it could be that the oil pump is malfunctioning or, the oil pump screen is dirty or clogged.

replace the oil pressure sending unit

First check your oil level if it is full take the oil sending unit out and install a pressure gauge to check you oil pressure.Compare your readings to the correct specs for that vehicle.If the pressure is good and the plug that connects to the sending unit has one wire only,do as follows.Take the plug loose from the sending unit,turn the key on and take a paper clip or other item and ground the wire to a good engine ground.If the light illuminates while it is grounded,the circuit and the light itself are good.Do not do this test if there is more than one wire going to the plug!!!I You could just replace the sending unit if you dont wont to test everything..The sending unit is cheap...Good Luck...