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Hi Everyone, thanks for the add.
I have owned my volt since it rolled out of the dealership in 2013, besides the one time that the dealer added fluid to the battery coolant reservoir back in 2016, it had been literally problem free since, it has 75k mi now.
However, I recently had a fender bender where I rear ended a truck, long story short, the Ford dealership (do yourself a favor and don’t do the same mistake), where the insurance company sent it for repairs, did a decent bodywork with the grill, but not so much for the electrical part of the repair, the battery coolant tank was replaced, and the ford body shop tech seem to have struggled with the DTC P1FF, I know that because of the ECU code history, which was brought to my attention by a low battery coolant level, just after 3 months or so since the repair, the DTC came back with some friends: P0AA6 and P1E00, all seem to be related. The coolant is at the correct level, but the codes keep coming back, I am taking the car to the Volt specialist, I am assuming that there is a small coolant leak in the battery pack, or outer plumbing, but it still don’t explain why the codes are still returning, even though the coolant level is constant, any thoughts?

I am trying to be informed by the time of my appointment with the Volt specialist in a couple of days.
 

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Could be a bad sensor /connector/wiring
 

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small leak will not trigger the float switch before you are going to see a large drop in the tank level.

make sure they did a re-programming not just a code reset.
 
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