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The check engine light just came on and the oil light has been coming on everytime the car gets warmed up no matter how much oil I put in there p1684 p0302 p1493
P1684 - Less than 50 Key On's.
P0302 - Misfire at Cylinder #2
P1493 - Ambient/Battery Temperature Sensor Input voltage too low.
Oil Light with the correct oil level = Oil Pressure/Sending Sensor.
Misfire at Cylinder # 2. One of three things: 1. Spark Plug (#2) malfunctioned. 2. Wire going to Cylinder # 2 is malfunctioning. 3. Electronic Coil is malfunctioning at Post # 2Misfire at Cylinder # 2. One of three things: 1. Spark Plug (#2) malfunctioned. 2. Wire going to Cylinder # 2 is malfunctioning. 3. Electronic Coil is malfunctioning at Post # 2
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P1684 is "the battery has been disconnected within the last 50 starts".. I would start by inspecting your battery cables and have the battery itself tested.
302 is misfire on cylinder 2. Please see my tip at http://www.fixya.com/cars/r6715318-causes_gasoline_engine_misfires. 1684 is battery disconnected, which you caused when you disconnected it--you can ignore that. You probably have an intermittent misfire. Please follow my troubleshooting steps and let me know if you have questions.
P0302 is miss fire #2 cyl like a bad plug,wire or coil P1684 will set if you have lost battery power or battery has been disconnected the miss fire is why the car is jerking
If you are running any extra systems, ie amps, subs, high watt speakers, etc. etc. you may need to get a better batter, like the blue. or yellow top one. check with auto zone.
P1493 Battery Temp. Sensor, Low Voltage,Solution: have the Battery and the Alternator tested, Auto Zone and Kragen as well as others do this for free. I suspect your Alternator is the problem.
Yah code 1684, it just tells you that battery/computer has been disconnected within last 50 starts. If it doesn't drive you nuts, give it some time, you'll be suprised how quick 50 starts will go by & light should go out
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