[Bafang] Randomly stop displaying speed while riding (the “--,-” will appear)

Comments collected from ~~#228~~

@Wojciech Górny

Problem with BBSHD.

The bike will randomly stop displaying speed while riding (the “--,-” will appear), and EggRider will report error FF. Everything else still works, the throttle and pedals seem to still behave as expected in selected mode/gear. Activating e-brakes fixes the issue instantly.

It doesn’t seem to be correlated to any particular bike setting (happens randomly on its own, every 30-60+ minutes). I’ve only started noticing it after updating the firmware (to the one that updates Watts display much more frequently). As far as i can tell, it doesn’t seem to be caused by any loose connection - the problem often happens on smooth, flat roads.

The app is v2.6.03, and the firmware is v2.6.51.

Bafang Version:

SZBF
BBS3
1.5
1.0.0.4

@ Justin Tanner

I have this exact same issue. It started today randomly. The bike operates normally, but the speed does not show, and Eff appears.

If I change levels, the speed appears but disappears after a few seconds. Is there a fix for this?

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