Check engine indicator light?
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Cruiser
Joined: Nov 2010
Posts: 135
Likes: 1
From: Ottertail, MN
Check engine indicator light?
2006 Road King Classic. Out for a ride tonight and the check engine and battery indicator light came on simultaneously. Bike was running fine when I parked it. I don't have an electronics manual. Can anyone get me headed the right direction?
Road Captain
Joined: Nov 2014
Posts: 680
Likes: 224
From: Buhl, Idaho
Most likely a charging system malfunction, I would think. The bike should show a code if it is. You need an accurate multi-meter, and the voltage measurements for the alternator output, and for DC out voltage from the regulator. Don't have the numbers in my head, but the info is sure to be online somewhere easy to find. The very first thing I would do, however, is check that all the wires on the regulator, both input and dc output are fastened securely .Either one being loose is unlikely, but stranger things have happened. Check he battery cables for looseness or corrosion. Also, a load test of the battery is in order here, just to rule out the battery as the problem. Do all the diagnostic tests you can before spending any money replacing things.
Grand HDF Member
Joined: Jan 2019
Posts: 3,634
Likes: 2,903
From: Mostly Florida, some Michigan
If all wire connections are tight it is most likely the voltage regulator. The exact same symptoms popped up on my '08 Heritage this summer and that's what was causing it.
Seasoned HDF Member
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From: Eastern NE
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Cruiser
Joined: Nov 2010
Posts: 135
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From: Ottertail, MN
Thanks for the feedback so far guys. Had the dealer check Vin for any history on warrenty issues or recalls, none. Was going to try some troubleshooting yesterday. Started bike, no indicator lights, voltage at 14.3. Went for a hour+ ride, everything normal, no lights. I guess I'll have to let it develop. Will post update when I figure it out
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Grand HDF Member
Joined: Oct 2018
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From: Flyover Country
Thanks for the feedback so far guys. Had the dealer check Vin for any history on warrenty issues or recalls, none. Was going to try some troubleshooting yesterday. Started bike, no indicator lights, voltage at 14.3. Went for a hour+ ride, everything normal, no lights. I guess I'll have to let it develop on a dark country road in the middle of the night. Will post update when I figure it out
Club Member
Joined: Oct 2016
Posts: 4,549
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From: Syracuse NY
Thanks for the feedback so far guys. Had the dealer check Vin for any history on warrenty issues or recalls, none. Was going to try some troubleshooting yesterday. Started bike, no indicator lights, voltage at 14.3. Went for a hour+ ride, everything normal, no lights. I guess I'll have to let it develop. Will post update when I figure it out
OMG! Get it checked out. It WILL take a dump at the most inopportune time.
An example might be as you're slipping out of your misstress' house as her WWE boyfriend comes home. And, well, wrrrrrllll, click, click, nada.
