My P1’s started dropping out mid ride or giving spurious power readings. It turned out to be a failed cadence sensor ring inside the pedal which is known to come loose over time. I got them replaced under warranty (at 23 months!!)
I have the same setup… recently had to have them send me a new battery cover because the one the pedals came with stripped. On my 3rd time taking it out/reinstalling it. If your’s hasn’t stripped I would call them and ask for a replacement. They did it no charge for me.
The battery caps can be troublesome. I had some issues after I replaced a battery - one of my caps was failing and I could tell which one by switching it left - right. They are under £20 so even if you aren’t under warranty, if you start getting odd dropouts or inability to pair (especially after changing the battery) it’s worth trying a new set just in case that’s the issue.
First set of P1 pedals bought Sep 2015, after bizzare readings and upgrading to V2 caps, replaced under warranty in June 2017. Replacement set started giving very high calibration (offset) readings and I feared the worst but had a go with the V3 caps and strangely all the problems went away. I did also in the meantime buy a set of single sided P1 pedals (you can pair the left one with your current right one and they were very cheap as now surpassed model-wise) and I noticed that the battery housing is much tighter compared to my current set.
The caps don’t contain anything. The issue with earlier caps is the inside diameter is slightly too small and the battery can’t move around in them. This means the battery doesn’t get pushed freely by the spring and has a poor contact with the terminal at the other end of the chamber. The inside diameter of the newer version of caps (they say v3 on them) are ever so slightly bigger, allowing the battery to move freely.
Source: Me. I had constant drop outs and sometimes not even turning on. Powertap sent new caps for free and it fixed it immediately.
But another problem is that they go to sleep way too quickly if you’ve stopped for a few minutes or sitting on the line before a race. Make sure you back pedal every minute or so to keep them awake. Sometimes they won’t wake up until you’re going and then actually stop peddling for them to become active. It’s weird and annoying.
I have the same issue There’s always been a message indicating the right sensor is missing. But recently I get this message. But recently I get this message repeatedly during a ride and the power readings stop intermittently.
PowerTap App doesn’t recognize the Rigth pedals P1.R. I have replace the Batteries for a new one.