@ScruffR - I just posted to Github on that issue, but I am still seeing this phenom on 3x Xenons running 0.9.0 and the PietteTech_DHT 0.0.9 library. I get -3, -4, -5 quite often. It sometimes is temporarily resolved by a reset button. I am reading the DHT22 every 60-ish seconds, so I know it’s not a rate issue on the sensor. Let me know if I can be of any more help with the investigation. 
1 Like