Repost: Swapped ECU, Wonked-out OBC

[Zambuzan]

Swapped my '88's 153 ECU for a working 173.
But now, the info on the OBC is all messed up! Date and time features work fine, but MPG range temperature etc. all show "PPPmiles/Fahrenheit." So instead of numbers (ex: 23.5 miles), it shows "PPP" lol
What's the deal? All else stayed the same...
Thanks.

[moatilliatta]

Disconnect the battery for an hour+ make sure your fuses check out ok.

[Zambuzan]

Yep that worked a while ago, forgot to update thread. Thanks.