Touring Models Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic bikes.
Sponsored by:
Sponsored by:

Check engine and battery light on

Thread Tools
 
Search this Thread
 
Old Apr 28, 2015 | 01:20 PM
  #1  
screamn_eagle's Avatar
screamn_eagle
Thread Starter
|
Outstanding HDF Member
Joined: Aug 2005
Posts: 2,601
Likes: 1
From: northern alabama
Default Check engine and battery light on

I am going to be bringing my bike into my mechanic in a day or two for this issue. i am pretty sure its either a voltage regulator or a stator or both. my question is.... do you thing the addition of a new radio and amp may have caused the issue or is it just because it "happens"
 
Reply
Old Apr 28, 2015 | 01:34 PM
  #2  
Joe12RK's Avatar
Joe12RK
Seasoned HDF Member
10 Year Member
Loved
Community Favorite
Top Answer: 1
Joined: Jun 2012
Posts: 6,157
Likes: 2,564
From: CT/FL
Default

I think it just happens - there was a recall on the 2012's for bad regulators... some outside the recall dates (like mine) also failed
 
Reply
Old Apr 28, 2015 | 07:57 PM
  #3  
vanman59's Avatar
vanman59
Cruiser
Joined: Apr 2005
Posts: 234
Likes: 2
From: Midland NC
Default

My check engine light came on going down the interstate and about a half second later the battery light came on and my voltage was at 10 volts. I drove to the dealer ( 5 miles) and had the regulator replaced in warranty.
 
Reply
Old Apr 28, 2015 | 08:15 PM
  #4  
furmium's Avatar
furmium
Novice
Joined: Oct 2014
Posts: 20
Likes: 0
From: Texas
Default

just replaced mine on my 2012 ultra limited at 27,XXX miles for the exact same condition, i installed one from cycle electric, their regulator mounts above the oil cooler instead of behind it.
 
Reply
Old Apr 28, 2015 | 08:16 PM
  #5  
sanman4ever's Avatar
sanman4ever
Club Member
10 Year Member
Liked
Loved
Community Favorite
Joined: Apr 2012
Posts: 3,461
Likes: 329
From: Rhode Island
Riders Club Member
Default

Originally Posted by furmium
i installed one from cycle electric, their regulator mounts above the oil cooler instead of behind it.
Where did you purchase the Cycle Electric from?
 
Reply
Old Apr 28, 2015 | 08:22 PM
  #6  
furmium's Avatar
furmium
Novice
Joined: Oct 2014
Posts: 20
Likes: 0
From: Texas
Default

ordered it through an independant repair shop, but it came from Drag Specialties
 
Reply
Old Apr 28, 2015 | 09:02 PM
  #7  
TriGeezer's Avatar
TriGeezer
Seasoned HDF Member
Photogenic
Photoriffic
Shutterbug
Joined: May 2012
Posts: 32,934
Likes: 36,032
From: Carlsbad, CA
Default

Based upon failure rates and the symptoms, there is a 90% chance it is the regulator.

IMHO..the other 90% is:
- wiring
-battery
- stator
 
Reply
Old Apr 28, 2015 | 11:49 PM
  #8  
band1t's Avatar
band1t
Cruiser
Joined: May 2014
Posts: 173
Likes: 5
From: CA
Default

Same thing happened to mine. Ended up being the voltage regulator as well, on a 2012 FLHX with about 11k miles. Found this out not only after replacing the battery, but after the bike dying about 2 miles from my house. Luckily the tow was free, but damn that was frustrating.
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Old Apr 29, 2015 | 07:17 AM
  #9  
hd_rolling's Avatar
hd_rolling
Supporter
Veteran: Army
Joined: Feb 2008
Posts: 4,133
Likes: 147
From: Grays Creek, NC
Default

If you haven't already checked, you could pull the battery and make sure the ground wire cable under the battery hasn't came loose? And just make sure the battery connections are tight.
 
Reply
Old Apr 29, 2015 | 09:49 AM
  #10  
B18cx's Avatar
B18cx
Intermediate
Joined: Apr 2015
Posts: 39
Likes: 1
From: Flint Texas
Default

I second checking the ground cable. The last bike I checked out for a friend had a check engine light and a code for low battery voltage. Turned out to be a corroded ground connection at the frame. Replaced it and added a second ground wire for an bit of extra measure. No problems since.
 
Reply



All times are GMT -5. The time now is 01:02 PM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE