check engine light issue

[jpmtb]

My friend and I where out riding to work this morning when he noticed his check engine light come on it was on for about 1 min, then it would go off for about 2-3 min come back on for about 35 sec to 1 min. so we then broke off so i go to my job and he go to his he then called me and told me he did a Diagnostic check went through the 10 codes and all showed up as clear no code. can anyone explain to us what and why this would happen. thank you all for your help.

2003 electric glide with 10th miles

 

[Hoople]

Must have been a carb bike.

 

[Jack Klarich]

Carb or EFI? Too low of an idle will some times cause this

 

[STEVE07]

Specs on the 03 Electraglide says they were still carbed.

 

[Hoople]

At any time did the bike act-up with a problem. Check engine light was coming on & going off by itself without any issues to the bike itself.

 

[Redfish-Joe]

I believe a loose spark plug wire can cause that. Check the fit of the wire on the plugs. May have to crimp them just a tad.