Check Engine Light / ECM Code U1097
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From: Glendale, AZ.
Check Engine Light / ECM Code U1097
I noticed a few days ago that my Check Engine light came on after I started my bike for a few seconds (about 7 Seconds) and then went off and everything seems to run fine. I went into the diagnostic mode last night and pulled a DTC off of the P and S module of U1097. It said in the list of codes that this is Loss of Speedometer Serial Data EFI and/or Loss of Speedometer Serial Data TSM/TSSM. I didn't clear the code to see if it was a Current or Historic code but was wondering what the heck does this code mean? I'm bringing it in for my 1000 mile service tomorrow so I left the code there. It doesn't seem to affect anything but I was just curious and thanks to anyone who can tell me what this means and how it possibly happenned.
Cruiser
Joined: Mar 2006
Posts: 186
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From: S.W. Florida
RE: Check Engine Light / ECM Code U1097
Probably the speed sensor. I think I read somewhere that it can get matal particles on it over time, and cause this malfunction. Apparently removing, and wiping it off, fixes it in some cases. On sportsters, it's on the front of the crankcase, by the oil filter. Don't know about the other models, (yet)
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Joined: Jan 2006
Posts: 1,360
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From: Idaho Falls
RE: Check Engine Light / ECM Code U1097
ORIGINAL: oldfartjc
I noticed a few days ago that my Check Engine light came on after I started my bike for a few seconds (about 7 Seconds) and then went off and everything seems to run fine. I went into the diagnostic mode last night and pulled a DTC off of the P and S module of U1097. It said in the list of codes that this is Loss of Speedometer Serial Data EFI and/or Loss of Speedometer Serial Data TSM/TSSM. I didn't clear the code to see if it was a Current or Historic code but was wondering what the heck does this code mean? I'm bringing it in for my 1000 mile service tomorrow so I left the code there. It doesn't seem to affect anything but I was just curious and thanks to anyone who can tell me what this means and how it possibly happenned.
I noticed a few days ago that my Check Engine light came on after I started my bike for a few seconds (about 7 Seconds) and then went off and everything seems to run fine. I went into the diagnostic mode last night and pulled a DTC off of the P and S module of U1097. It said in the list of codes that this is Loss of Speedometer Serial Data EFI and/or Loss of Speedometer Serial Data TSM/TSSM. I didn't clear the code to see if it was a Current or Historic code but was wondering what the heck does this code mean? I'm bringing it in for my 1000 mile service tomorrow so I left the code there. It doesn't seem to affect anything but I was just curious and thanks to anyone who can tell me what this means and how it possibly happenned.
Several questions:
1) How do you get to the diagnostic mode,
2) What is DTC and P & S module,
3) Where are the codes listed?
BTW - do I need to get the electrical manual for my bike in order to understand what you said and answer?
Thanks
Thread Starter
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Outstanding HDF Member
Joined: May 2005
Posts: 3,116
Likes: 0
From: Glendale, AZ.
RE: Check Engine Light / ECM Code U1097
ORIGINAL: OneBlackFly
Old,
Several questions:
1) How do you get to the diagnostic mode,
2) What is DTC and P & S module,
3) Where are the codes listed?
BTW - do I need to get the electrical manual for my bike in order to understand what you said and answer?
Thanks
ORIGINAL: oldfartjc
I noticed a few days ago that my Check Engine light came on after I started my bike for a few seconds (about 7 Seconds) and then went off and everything seems to run fine. I went into the diagnostic mode last night and pulled a DTC off of the P and S module of U1097. It said in the list of codes that this is Loss of Speedometer Serial Data EFI and/or Loss of Speedometer Serial Data TSM/TSSM. I didn't clear the code to see if it was a Current or Historic code but was wondering what the heck does this code mean? I'm bringing it in for my 1000 mile service tomorrow so I left the code there. It doesn't seem to affect anything but I was just curious and thanks to anyone who can tell me what this means and how it possibly happenned.
I noticed a few days ago that my Check Engine light came on after I started my bike for a few seconds (about 7 Seconds) and then went off and everything seems to run fine. I went into the diagnostic mode last night and pulled a DTC off of the P and S module of U1097. It said in the list of codes that this is Loss of Speedometer Serial Data EFI and/or Loss of Speedometer Serial Data TSM/TSSM. I didn't clear the code to see if it was a Current or Historic code but was wondering what the heck does this code mean? I'm bringing it in for my 1000 mile service tomorrow so I left the code there. It doesn't seem to affect anything but I was just curious and thanks to anyone who can tell me what this means and how it possibly happenned.
Several questions:
1) How do you get to the diagnostic mode,
2) What is DTC and P & S module,
3) Where are the codes listed?
BTW - do I need to get the electrical manual for my bike in order to understand what you said and answer?
Thanks
Go to this link ( https://www.hdforums.com/forumid_247/tt.htm ) and look at the bottom two threads in the first section and depending on your year of bike it explains how to do this and gives you the list of codes. I have an 06 RK so I used the one for 04 and 05 and it works fine. I don't know what kind of bike you have since you don't show it in your signature. Good luck.
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