Question

I have a 2004 Infiniti V8 with codes P0462 and U1000, what is the meaning of the codes?

Answer 1

U1000 is a bad ground problem, you can clean the factory grounds with sand paper and tighen them back up. and you can add a grounding kit to help the factory grounds

P0462 INFINITI - Fuel Level Sensor Circuit Low Input

try the U1000 fix first that might help the other problem

Answer 2

P0462 INFINITI - Fuel Level Sensor Circuit Low Input
Read more: https://www.autocodes.com/p0462_infiniti.html

U1000 INFINITI - CAN Communication Line - Signal Malfunction
Read more: https://www.autocodes.com/u1000_infiniti.html