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Battery Light issue.

2664 Views 7 Replies 4 Participants Last post by  Ujiro, 
ToothlessSt
Hey guys, couple of days ago I was leaving my work and saw that my battery light was on, (Later i figured that it turns off/on occasionally) naturally I went to check my cobb to see the codes, I always a U0284 code, since I do not have AGS whatsoever, I've had this car for year and a half now and been driving with that code no problem, but I saw that there is new codes, U012D, U042E, P065B, and P065C.
My best guess would be an alternator, but I'm just not sure, there was a lot of snow a day or two before I saw the code, I'm not sure if that could affect anything. In other discussions I saw someone saying that battery might cause the issue. I have checked voltage on my car, when off it does 12.5V, and when the vehicle is on and the light is off it does 14.7V, but when the light goes on it does 13.7V. No driving issues at all, and I haven't seen any electric issues too.
Hopefully you guys could help me!
I call on you FoST gurus: @SSgtjrobertson and @Duece McCracken
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SSgtjrobertson
www.focusst.org

Key not recognized, vehicle won't start...

*Updated to add mention of the AGS causing a communications problem with the alternator and battery light. 11/28/2020 05/27/2021 - BMS manual reset procedure added courtesy of @ddfred 07/12/2021 Ford part number for fuse added 07/18/2021 Added full location, description, and Ford part...
www.focusst.org www.focusst.org

I updated this thread to include some of these issues. Read over this post and we can discuss it further.

J
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SSgtjrobertson
ToothlessSt said:
Yes, I've went through that thread, it seems very helpful, but I couldn't really find anything. Most common idea is AGS, but once again, I don't have them, and my the port for it have been dangling around ever since I've had it.
Click to expand...
Do you have a DMM (digital multimeter)?
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