Permanent code P0463 Fuel Level A Circuit High

[MNK91]

Hello Everyone,
I have a 2019 Mazda CX-9. The fuel gauge is stuck on empty and has permanent code P0463. The fuel level A circuit is high. I replaced the Fuel level sensor sending unit but that didn't help. I believe I have a problem with the cable connection or harness cut somewhere. does anyone have the circuit diagram connection for the fuel level sensor? or any suggestion that might help?

Thank you in advance.

 

[MNK91]

Mazda CX-9 AWD has Two fuel level sensors. Main tank and sub tank. My issue was in the sub tank fuel level sensor on the right side of the second row seats. It was reading 0 ohms.