speed sensor circuit

[wulf]

hi there ! got a bit of a problem with 2004 h2
dtc comes back as speed sensor circuit input low ! car still drives ok but doesn`t appear to change up beyond second gear speedo reading zero ( for few months now ) but gearbox problem only just come up ! i`ve tried swapping speed sensor with known good one from another vehicle but made no difference at all
i`d appreciate any and all help or advice you can offer