chip i didnt even think about the heater resistance for the faulty sensor tbh, i just assumed then all heated up to the same temp, remember im only going based on what bosch and denso mention,,, but then i also went to a factory who lied to me about my former employers exhausts not being able to pass R103 when in comes into force,,, when it turns out they are made in the same factory in italy where they HAVE to comply already so its possible that they skim past stuff too and not get too tied up in the truth of it

heat resistance is a huge part on cars electrics i know that and its how it detects wear which DOES make sence to a point for errors but still leave questions too when you see the range of lambda sensors available