DTC U0156

ultrafxr · Sep 4, 2022

On long road trip and stopped for gas about 10-12 miles from hotel. Turned on ignition and all normal for a couple seconds and then my Dakota Digital gauges all went dark - no display at all. And I noticed the gps display on my infotainment screen was in the 'night' mode - dark background even though it was bright and sunny. Cycled the ignition a few times but no joy. Rode to hotel, checked in and went back out to the bike. Everything is working normally now. Retrieved DTC code U0156 - lost communication with speedometer. Suspect a 'glitch' (a very technical term) in BCM. Thinking I might check cable connection there but where is the BCM on my 2020 TG? And any other ideas / suggestions welcome.

Old Road Dog · Sep 4, 2022

ultrafxr said:
On long road trip and stopped for gas about 10-12 miles from hotel. Turned on ignition and all normal for a couple seconds and then my Dakota Digital gauges all went dark - no display at all. And I noticed the gps display on my infotainment screen was in the 'night' mode - dark background even though it was bright and sunny. Cycled the ignition a few times but no joy. Rode to hotel, checked in and went back out to the bike. Everything is working normally now. Retrieved DTC code U0156 - lost communication with speedometer. Suspect a 'glitch' (a very technical term) in BCM. Thinking I might check cable connection there but where is the BCM on my 2020 TG? And any other ideas / suggestions welcome.

1st- check your battery connections. Next check your speedo connections. Since you have the DD gauges you or someone installed them. Id start there. Leave the BCM alone.

rhino 2 · Sep 4, 2022

Old Road Dog said:
1st- check your battery connections. Next check your speedo connections. Since you have the DD gauges you or someone installed them. Id start there. Leave the BCM alone.

I agree…; Electrical Connections 101’ Go back to the last thing you monkey with..

..

Jack Klarich · Sep 4, 2022

Clear the code, tighten the battery connections

Koolbreeze · Sep 4, 2022

And check your Maxi Fuse to ensure it is seated tightly in the female spade pins. You will notice some melting on the fuse housing if it is not.

Probably should check your other fuses while you are at it just to be sure they are seated tightly, vibration does strange things.

ultrafxr · Sep 4, 2022

Good ideas guys. Thanks. I’ll check maxi fuse and battery. Was aware of plug on gauges so I checked carefully when I installed to make sure it locked in.

DTC U0156

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