Having problems with your Chrysler Cars & Trucks ?

P1687 code twice within a day the check engine light came on and the speedometer and tachometer quit working, went to zero. After sitting for an hour and a half after last drive that the issue occurred, the car started fine for a two minute ride, then would start and immediately shut off after being off for 5 min. the car has sat for four hours and will not even turn over. If I leave the key turned to the on position the check engine light comes on and finally spits out codes P1684 and p1687, an

Posted / edited by AnonymousUser on : 18-01-2021

Answers :

Code 1684 is not on the list for Chrysler cars, code 1687 is for the battery voltage dropping below 10 volts. This can occur if the voltage actually does drop below 10 or if the battery is disconnected from the computer.
It could be a wiring problem between the key switch and the main fuse box.
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