When disconeted battery it reset the code.then when you drove it the code poped back up. Scan you computer and see what code comes up .autozone
SOURCE: p1684 dtc code on 2001 dodge grand caravan sport.
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
SOURCE: Engine light
Try the o2 sensor
Gas cap tight
Mine kept coming on and I replcaed the sensor and now it is off
SOURCE: check engine light code 51
there is a code 51 first of all, try putting octane boost in the tank, there has been several completes all across the country of watered gas, i have a 96 and a 95 neon and within days of filling both up the code 51 came up. the boost helped 1 and the MAP sensor had to be replaced on the 96. hope this helps
SOURCE: Check Engine light. Misfire Cylinder 4. Keeps coming back
Dodge 2001 Caravan....check all the wiring hhorness for all the injectors they always melt....and possibly yu will need a nes ecm...i have fix two caravans with the same codes and both had to have the injector wires replace with the ecm....good luck
cyber1
SOURCE: code P0 406 engine light stays on, I disconnected
I would suggest you disconnect the vacuum hoses,plug and road test
If issues go away,replace the valve
Todays Valves are Electronic,no cleaning to do
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