The other day my girlfriend was driving her 2002 Dodge Caravan SE home, & from what I remember everything was fine nothing out of the ordinary. Only when we made a turn she tells me theres a problem, the oil light came on & hasn't shut off since. Now the truck cranks but won't start, I thought it could be the fuel pump. But looking into it a couple things could be an issue. The truck has enough oil if any too much, theres coolant in the truck & power steering fluid is also full (again over filled.) The error code I'm getting on the dash is P-1684, tho I did disconnect the battery to check the truck. Previous owner never did an oil change, he'd only add a couple quarts when low. I'd appreciate a general idea to locate the issue, Thank you 2002 Dodge Caravan SE 2.5L 135,300 miles Error code P-1684
The oil light is the serious problem-it may mean the engine has lost oil pressure which is very dangerous. Don't drive with the oil light on- have a shop check your oil pressure with a mechanical oil pressure gauge. The previous owner's negligence in not changing the oil may have caused serious internal damage.
The code is not truly a diagnostic trouble code-it only indicates the battery has been disconnected within the last 50 starts, which would have erased any stored codes if there were any.
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