Check Engine Light
Thread Starter
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Road Master
Joined: Feb 2023
Posts: 956
Likes: 838
From: Hudson, CO
Check Engine Light
So, I installed my new bars today. Process seemed to go smooth, they fit great and much more comfortable. I checked all the functions of both side controls and all is well. The bike runs fine. I took a quick spin around the block and noticed the check engine light is on. I don't have a scanner. Is there a way to check codes without one? Any ideas what might be going on?
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,077
Likes: 11,100
From: San Diego, CA
So, I installed my new bars today. Process seemed to go smooth, they fit great and much more comfortable. I checked all the functions of both side controls and all is well. The bike runs fine. I took a quick spin around the block and noticed the check engine light is on. I don't have a scanner. Is there a way to check codes without one? Any ideas what might be going on?
Yes there is......
I don't own an M8, so I don't know if the process changed for them, or for the new ECM introduced around 2021...
Someone will surely post up soon with the M8 procedure....
NOTE: Hulkss and I were typing at the same time....
Last edited by hattitude; Apr 18, 2023 at 10:29 PM.
Thread Starter
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Road Master
Joined: Feb 2023
Posts: 956
Likes: 838
From: Hudson, CO
Thank you guys! I found a video on how to read codes. I found the following:
ECM
P2122h, P2127h
BCM
C0077h, b2106h, b2141h, b2146h
SPDO
U0141h
I also found a video on how to clear codes. I cleared them all and now I have no check engine light!
ECM
P2122h, P2127h
BCM
C0077h, b2106h, b2141h, b2146h
SPDO
U0141h
I also found a video on how to clear codes. I cleared them all and now I have no check engine light!
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,077
Likes: 11,100
From: San Diego, CA
Just for info, those are all historical codes as designated by the "h" at the end...
After a certain number of engine cycles, they would have cleared on their own unless they became current again... but it's always better to be able to control them...
Stellar HDF Member
Joined: Jul 2021
Posts: 2,056
Likes: 2,071
From: NoVA
As already been mentioned all codes are historical (might have been triggered when you were disconnecting/reconnecting stuff). Try to clear them (hold trigger button while in code display mode and answer yes to clear specific module codes, continue to next module) and see if any codes come back.
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Seasoned HDF Member
Joined: Sep 2017
Posts: 12,186
Likes: 4,910
From: England
Did you happen to remove the maxi fuse before you started?
The hand controls have modules that are always powered along with the BCM and ECM. It could be if you removed wires during the bar change the BCM saw them as errors.
The hand controls have modules that are always powered along with the BCM and ECM. It could be if you removed wires during the bar change the BCM saw them as errors.
Last edited by Andy from Sandy; Apr 19, 2023 at 01:31 PM.
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Thread Starter
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Road Master
Joined: Feb 2023
Posts: 956
Likes: 838
From: Hudson, CO
No I did not pull the main fuse. I agree, the vast majority of the codes were related to things I unplugged and plugged back in. I didn't see any requirement to pull the fuse in the service manual, but I may have missed it. Also, the "How To" videos I watched did not pull the fuse. Not saying they did it right, just saying.
Road Captain
Joined: Apr 2020
Posts: 654
Likes: 370
From: Gilbert, AZ
No I did not pull the main fuse. I agree, the vast majority of the codes were related to things I unplugged and plugged back in. I didn't see any requirement to pull the fuse in the service manual, but I may have missed it. Also, the "How To" videos I watched did not pull the fuse. Not saying they did it right, just saying.
I pull it anytime I do work... just because. Don't know if that is a bad habit, but I have never had any codes.