Battery light on
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5th Gear
Joined: Dec 2023
Posts: 5
Likes: 2
Battery light on
I have a f250 superduty 6.2L. I recently had the battery light come on and the next morning on my way in to work all of the lights and radio went out. I checked the alternator readings and it was overcharging at 16.5-17.5. I changed out the alternator and now charging at 14.8 both at the alternator and the battery but the battery light keeps on. I scanned it and p0625 code comes up. I've cleared the codes but they keep coming back on. Been looking for broken wires and cleaning connections but can't seem to find the problem. Any help would be great
Cargo Master
Joined: Apr 2012
Posts: 2,029
Likes: 530
From: Bottom Of Pikes Peak
did you use an oem or bosch alt? sometimes autoparts store brands will do that. also are you absolutely sure the connector is fully seated, I think that can cause it too. I did that once, swore I had it fully seated but it actually wasn't.
Cargo Master
Joined: Apr 2012
Posts: 2,029
Likes: 530
From: Bottom Of Pikes Peak
I don't know what else would cause this issue. hopefully the more knowledgeable will chime in
Cargo Master
Joined: Dec 2015
Posts: 2,920
Likes: 515
NAPA is almost surely your problem. OEM will likely fix you up
See this:
https://www.ford-trucks.com/forums/1...ight-on-2.html
You can also read the two links I posted in post #18 above.
OP resolved in post #27 by getting rid of aftermarket alt
This is not isolated problem. You can find at least a total of three threads including the one linked above
See this:
https://www.ford-trucks.com/forums/1...ight-on-2.html
You can also read the two links I posted in post #18 above.
OP resolved in post #27 by getting rid of aftermarket alt
This is not isolated problem. You can find at least a total of three threads including the one linked above
Logistics Pro
Joined: Jan 2010
Posts: 4,129
Likes: 1,647
Agree with Redford, if you've been overcharging your battery it's POSSIBLE that it is damaged. It is ALSO possible that the battery was going bad and forcing the overcharge condition to the point where it blew the regulator out on your original alternator. It's a good idea to change batteries every 4-5 years, give or take.
That said, Super Duties tend to not like anything that doesn't have the Ford logo on it. It may run okay with aftermarket parts, but quite often non-OEM electrical components give these trucks heartburn.
That said, Super Duties tend to not like anything that doesn't have the Ford logo on it. It may run okay with aftermarket parts, but quite often non-OEM electrical components give these trucks heartburn.
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5th Gear
Joined: Dec 2023
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My battery is about 3 years old and I did test it and it reads good. The napa alternator was charging it at about 14.0-15 volts so I’m hoping that’s why the light is still on. I ordered a oem one and will install it tomorrow and see what happens
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Cargo Master
Joined: Dec 2015
Posts: 2,920
Likes: 515
When the batt light came on on our '08 F150 I ordered some parts and rebuilt it myself. It's been working fine.....
On my SuperDuty I carry a spare used OEM in the truck box. They can be quite affordable on ebay, but certainly with any used part there's a gamble-- although we know from results new parts are a gamble here, too
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