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Old Feb 18, 2024 | 04:18 PM
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Hello! I changed my battery today--after installing the new battery, all is good except now the check engine light is on...has anyone had this issue? Any ideas? Thanks for your thoughts!!

(2019 GS)
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Old Feb 18, 2024 | 04:50 PM
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Is the small black wire attached to the negative terminal? Also recheck tightness on everything, not just the terminals.
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Old Feb 18, 2024 | 06:01 PM
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Originally Posted by DrivesWithTwoFeet
Is the small black wire attached to the negative terminal? Also recheck tightness on everything, not just the terminals.
that little black wire can cause alot of problems if not connected properly
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Old Feb 19, 2024 | 08:34 AM
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I agree on ensuring the small black wire is securely attached. Otherwise strange issues can occur.
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Old Feb 19, 2024 | 08:54 AM
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Check for DTC's, make a note if any.

Reboot the system.

Remove the neg battery cable, press on brake and hold fo 2 minutes, reconnect cable, allow time for all electronics to come up, reindex windows.

Recheck for codes.
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Old Feb 19, 2024 | 12:53 PM
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Will give it a shot--see what happens--thanks!!
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Old Feb 19, 2024 | 12:55 PM
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BTW, there are 2 wires connected to the neg terminal, on short one and one long one...I noticed that on some of the utube vids I watched, they didn't have both
of those wires...do you have 2 wires connected to the neg terminal??
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Old Feb 19, 2024 | 01:18 PM
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yes it is, there is also a longer back wire that was connected to the neg--do you all have that wire??
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Old Feb 19, 2024 | 03:33 PM
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quick follow up--unhooked little black wire and re attached--seems to be OK now...strange--thanks all
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Old Feb 19, 2024 | 05:58 PM
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And, get a cheapo code-reader/resetter at any parts store. You'll likely need it at some point, on something, even if not now. Mine's an old Altel, as best I recall being away from home right now.
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