2016 Fatboy low lost all power

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Apr 28, 2018 | 06:26 PM

TonyN1969

Thread Starter

Stage IV

Joined: Jul 2017

Posts: 4

Likes: 0

From: Indiana

2016 Fatboy low lost all power

I just fired up my bike and went to go for a ride. I didn’t make it a 1/2 a block and it shut off completely. It has no power whatsoever. I pushed it back to house and checked battery. I have 13v and I checked the 40 amp multi fuse and both 15 amp fuses. They are all good. I also found a 7.5 amp under there and it’s good too. I have a flashing light where my battery tender hooks up and have 13v there also. My speedo is also stuck at 30 mph. I don’t know if that matters but I have nothing when I turn the switch to ignition and accessory. Does anyone know where I can start looking to diagnos this problem?

Apr 28, 2018 | 07:14 PM

jkinner

Road Captain

Joined: Jul 2010

Posts: 560

Likes: 88

From: Gila Bend AZ

I would start by disconnecting the +battery post waiting 5 min hook back up and see if that clears the ECU, Go from there, is it showing a code?

Apr 28, 2018 | 07:57 PM

TonyN1969

Thread Starter

Stage IV

Joined: Jul 2017

Posts: 4

Likes: 0

From: Indiana

I was able to wiggle a wire up under the oil tank and it light right up. I don’t know if it was to the starter or the O2 sensor. Tried to wiggle it to recreate the problem and had no dice

Apr 28, 2018 | 10:22 PM

jkinner

Road Captain

Joined: Jul 2010

Posts: 560

Likes: 88

From: Gila Bend AZ

At least she is running.

Apr 28, 2018 | 10:39 PM

TSheff

Seasoned HDF Member

Joined: Feb 2013

Posts: 11,322

Likes: 3,661

From: SE Texas

Riding - lost all power - battery and fuses are good.
BAD contact on the IGNITION Switch, a bad ground, or Coil or ECM flaking out.

Apr 28, 2018 | 11:14 PM

PA1195

Road Captain

Joined: Apr 2007

Posts: 679

Likes: 120

From: Fairbanks, AK.

Pull the speedo console and make sure the connections to the speedo unit and switch are ok. The bike needs that connection to work right.

https://serviceinfo.harley-davidson....3d74c8&id=5543

Last edited by PA1195; Apr 28, 2018 at 11:22 PM.

Apr 29, 2018 | 08:32 AM

txphatboy

Road Warrior

Joined: Jul 2011

Posts: 1,326

Likes: 333

From: Central TX

Have you done anything to bike recently - opened up switch housings, lifted tank, anything? I had something similar - speedo would lock up, turn signals would stop working and bike would sputter and stall. I had the brake light switch on the handlebar break and was shorting out. Mine was blowing a fuse, helping to narrow down the cause.