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I have a 2012 Volt with 59K miles on it, and I haven't had a problem with it until recently. About two and a half weeks ago, the check engine light came on. I don't have Onstar, so I don't have codes for anything here. Anyway, I took it to my dealer, and they replaced part of the charging system, which included tightening the charge door. I would be more specific but can't locate the paperwork stating what they did; I must have misplaced it in the Christmas rush.

So on the drive home from picking it up, I get the "battery too cold, plug in car" message, which I found from searching relates to temperatures much colder than I was driving in (which were in the 30s - I'm in the Detroit area). I took the Volt back out again a couple hours later, and the engine light was back on, and the battery too cold message popped up once or twice. So I took it back again. The service folks told me the next day that they'd have to order a part from GM, as they'd never seen this issue come up before. A week later, I pick up the car. This time, the problem was diagnosed as "hybrid battery section 2 - temp sensor 6 failure," and they replaced that battery section.

I picked up the car Monday, and the the temps were not cold enough to start the gas engine until yesterday. As soon as the gas engine started, the check engine light came on, and has not gone off since. This is getting a bit frustrating. Anyone have anything remotely like this? The car has run and charged normally at all points since this started, so far as I can tell. If the engine light had never come on, I would not have been able to discern anything wrong with the car.
 
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I have a 2012 Volt with 59K miles on it, and I haven't had a problem with it until recently. About two and a half weeks ago, the check engine light came on. I don't have Onstar, so I don't have codes for anything here. Anyway, I took it to my dealer, and they replaced part of the charging system, which included tightening the charge door. I would be more specific but can't locate the paperwork stating what they did; I must have misplaced it in the Christmas rush.

So on the drive home from picking it up, I get the "battery too cold, plug in car" message, which I found from searching relates to temperatures much colder than I was driving in (which were in the 30s - I'm in the Detroit area). I took the Volt back out again a couple hours later, and the engine light was back on, and the battery too cold message popped up once or twice. So I took it back again. The service folks told me the next day that they'd have to order a part from GM, as they'd never seen this issue come up before. A week later, I pick up the car. This time, the problem was diagnosed as "hybrid battery section 2 - temp sensor 6 failure," and they replaced that battery section.

I picked up the car Monday, and the the temps were not cold enough to start the gas engine until yesterday. As soon as the gas engine started, the check engine light came on, and has not gone off since. This is getting a bit frustrating. Anyone have anything remotely like this? The car has run and charged normally at all points since this started, so far as I can tell. If the engine light had never come on, I would not have been able to discern anything wrong with the car.
Hi JW999,

Rest assured that this is not a situation we like to hear of, and we do sincerely apologize for any frustration caused. If you'd like, my team here can assist further in a number of ways.

I can start by reaching out to your dealership and the appropriate internal technical resources on my end to get this CEL issue properly addressed. I'll simply need you to send me a private message with your VIN, contact information, vehicle mileage and servicing dealership name.

I can also contact your dealership and ask that they provide you a new copy of the service reports from your previous visits, if you'd like. I know you mentioned not being able to find the paperwork, and I'd like to ensure you have the appropriate service details for your records.

Please don't hesitate to send me private message if I can help in any way.

Warm Regards,

Amber G.
Chevrolet Customer Care
 

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If the CEL is on continuously there will be code(s). I'd suspect a wire didn't get hooked back up after the battery work. Dealer time again unfortunately.
 
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