No Codes w/o Engine Light?

ThisGuy

Standard Boor
Joined
Apr 24, 2017
Messages
210
Location
Bozeman, Montana
Ride
2005 Rocket III
I think I saw this mentioned in an older thread, but did some searching and didn't find a definitive answer.

Is it true that if you don't have a check engine light on, you won't have any trouble codes?

I had always thought with cars there are certain codes that trip the light, and more minor codes that are logged for when they're checked, but won't trigger the light. Is that not true for the Rocket?
 
i would love to have answers to those questions.
on cars u r right there r some codes that trigger light and some don't
sometimes it takes three or more incidents to turn on the light.
depending on what code reader or scanner u use they may or may not pick up the codes. sometimes our little micky mouse code reader will pick up codes that our $3000 scanner wont and vice a versa.
i have never had a code on mine.
 
I've not seen any codes that didn't trip a light, across 4 different ob2 interfaces and 5 different pieces of software. It doesn't mean it won't, but it would be odd to see to say the least.
 
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