HELP! Electrical? Gremlin LD04HZ dash display

All,
I have searched high and low and have been unable to find a post that covers the issue I am having.
2007 GRiSO 1100. Potential pertinent Mods:GuzziTech ECU reflash, GuzziTech exhaust system, BMC filter, PC-V with Auto Tune, LED turn signals with resistors and LED headlight. All mods have been on the bike for some time without issue.
Put in new Battery Tender Lithium battery about 4 months ago. Will hook up Battery Tender Lithium specific charger at least every 3-4 weeks if bike isn't being ridden to maintain charge. Put the bike on the charger 2 days ago as I knew I would be riding the bike today (scheduled to be used in a music video shoot). Went to start the bike this morning and the battery was dead. Checked voltage with a meter and it was completely dead. Assumed I got a bad battery for it to die that quickly. Went and bought a new AGM battery. Once the new battery was installed, and I turned the ignition on, I got a small service wrench at the top of the dash with LD04HZ displayed across the dash. This message stays on the dash when the ignition is turned off and the key is removed. I cannot find this error code listed anywhere.
The bike will start and run (and runs as normal), but the dash no longer functions at all - other than displaying the error message. I have also lost the headlight (but the flash to pass still functions) and lost the turn signals. The horn still functions. Tail light and brake light are normal. I checked all fuses, and unless there are some hidden ones I don't know about, are fuses are intact.
Does anyone know what is going on?

Thanks!
Kevin

Another member here had a similar problem a couple of weeks ago. I at first, from his description, thought that the issue was simply the dashboard re-boot code that appears when the battery is reconnected and the dash starts up. That occurs before the dash goes through its 'Sweep' with the key off.

In this case though it turned out not to be that. The LD04HZ code remained and in the end he replaced the dashboard. An expensive and tedious experience. The only thing that I think I remember that might be relevant, although I don't know why? Was that I seem to remember that he too had been using and then had problems with a lithium battery prior to the dash going tits.

Having all the GT junk on it won't be helping it but I don't think that it is likely to be relevant to the dash going on holiday.

The issue has been resolved. I cleaned all electrical contacts/connections as that was suggested as a solution on another forum. That did not initially fix it. I unplugged the dash connection and then plugged it back in with the ignition powered on and that got the dash to reset. All is working as expected now.

Gladit is going again

good to know the cure as well thank you Kmac33