Can you be more specific? Was your battery disconnected or did it lose it's charge? If you did not disconnect the computer, it would not need to be reconnected. If your battery was dead or disconnected, simply remove the positive battery cable for about 10 minutes and re-connect it. This should clear your code. Even if the code does not clear you should have no problems with the function of your car.
P1684 simply means that the computer has recently lost battery power. Either the battery has been disconnected or there is a wiring issue.
Battery has been disconnected in last 50 starts.
it means battery power has been disconnected from the pcm
its actually code 12 which means that the battery or computer has been disconnected within the last 50 cranks
dows any one know what it means when the code says battery power to mod disconnected ? In a Dodge intrepid 2002 with a 2.7 enigne
I am not a mechanic, but your fob connects electrical systems of the car. Disconnected battery means it doesn't get the message to open the car.
I take it you have a newer model cavalier. Which means you have an OBD-II computer. This type of computer stores the code until fixed. So if there is a preblem, then this fix will only be temporary...(STEP1) Disconnect battery for about 30 mins or even while you sleep at night. (STEP2) Reconnect battery...ENJOY!!!
Usally that means the battery has been disconnected within the last 10 starts
it means the light on a battery of a computer or cell phone
12 - means battery power to computer disconnected in last 50 to 100 cycles memory standby power lost. 15- means Vehicle speed/ distance sensor circuit
Trouble code P1684 means: The battery has been disconnected within the last 50 starts
Code 12 just means that the battery has been recently disconnected