2003 FLSTC 21,000 MILES ENGINE LIGHT ON AFTER 7 MILES. DIAGNOSTIC DISPLAY IS do1clr,then do2clr,etc. to do10clr then it says:PPU, and next is 82883. What am I doing wrong?

Wow, that's a lot of codes! You have codes that I can't find. Number one tip, keep the battery on the bike and on a Battery Tender which keeps it trickle charged.

However, does the bike not start? You have a security immobilizer on that model! Removing the battery, or letting it go flat means it needs resetting.

I found this;

It was likely PPU 82883. It stands for the electronic Speedometers Pulse Per Unit. The codes prior to that are what are important.
Jun 19, 2011

Trouble code ' Harley Davidson Forums

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2003 Electra GLide throwing code PPU 82883 - Harley ...

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Oct 7, 2009 - There is nothing wrong....see below. After all the diagnostic codes are displayed, the speedometer's pulses per unit (PPU) setting is displayed.
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Could be the speedo itself. The codes you are talking about are actually showing that they are clear. That's what the Clr stands for. If they were actually codes there it would show the number with set behind it instead of Clr. The PPU is the part number. As far as the speedo goes. Most of the time it is the speed sensor, but i would suggest taking it to a dealer to have them actually check the speedo correctly to see if it is that for sure.

I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_5bac37c3cb991fdb

no such code exists

Check this link, I found many other posts on the web with the same code thrown, this was the best answer...

http://www.fixya.com/motorcycles/t4595026-engine_code_came_up_ppu_82883