All of a sudden my speedometer, tachometer, the digital gauge pod, OBD2 and heater/blower all stopped working?

Hello, I hope you can help me please with these electrics? I went out last night and on the way all of a sudden, my speedo, rev counter, the digital gauge pod, obd2 and heater/blower all stopped working. I've done a cluster self-diagnostic and the needles all worked, I've checked all the footwell fuses, fuses near battery and the fuses on the IPDM and they're fine. I managed to get my OBD port to work occasionally and pulled two codes a P0181-powertrain fuel temperature sensor A circuit range/performance.
P0463-fuel level sensor circuit high input. I've also read that HVAC amplifier module can cause a lot more issues than just the heater problem, like gauges not reading and showing an empty fuel tank. Any help or pointers on where else to look would be fantastic as all I get from Nissan is take it to your local dealership! Which isn't cheap and times are tough at the moment thankyou for listening to my problem. Thanks again.