DTC code U1097

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Sep 3, 2009 | 12:55 PM

HOTLAP

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Seasoned HDF Member

Joined: Feb 2007

Posts: 5,067

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From: Edmonton Alberta Canada

DTC code U1097

I got a DTC code U1097 "loss of speedometer serial data to ECM"
I have cleared it to see if it shows up again or was just a fluke but was wondering if anyone knows what that means.

Sep 3, 2009 | 01:08 PM

FastHoss

Elite HDF Member

Joined: Dec 2007

Posts: 4,271

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From: Green Country,Oklahoma

I would be checking your fuse box for corrosion,also replace your system relay,my 07 would start this kind of crap right before the system relay would go south.

Sep 3, 2009 | 02:58 PM

cHarley

Club Member

Joined: Feb 2007

Posts: 16,320

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From: Boynton Beach, FloriDuh

+1 - Also clean the ECM contacts and coat them and all electrical contacts with dielectric grease.

Sep 3, 2009 | 03:26 PM

HOTLAP

Thread Starter

Seasoned HDF Member

Joined: Feb 2007

Posts: 5,067

Likes: 394

From: Edmonton Alberta Canada

Thanks, I will get a system relay just in case and check the ECM connections, I added a PC5 about a month ago so maybe something has vibrated a bit loose there, maybe I should zip tie the connectors onto the ECM and the PC5,
I'm hoping it was a one time thing but I'd rather be prepared. I'll take it for a long ride after work and see if the code reapears.