we have a 2003 Subaru that is throwing the code PO 463 which i believe is the hi input sensor on the fuel pump. no issues with the running or performance of the car. no trouble starting , no stalling , no hesitation , etc.

it happens when it is hot out and the fuel gauge goes out. then when it is not hot the fuel gauge works again and the CEL goes out. could it be in the dash?

 

just wondering what we can do. We are in CA so it has to be fixed before it is smogged. could this lead to a fuel pump failure? i know thet the 2003 H6 has problems with something cracking in the fuel pump. the vehicle has 171k miles on it. the whole assmbly cost 300 with another 200 for labor. 

 

 

I would check inside the connector on top of the pump assembly for any dirt or corrosion first. If that's ok I would pull the pump assembly and check the wiring to the level sensor.

There could be a poor solder joint on the sensor, or a break in the wire between the sensor and the connector.

 

Possible it could be a broken solder joint in the instrument cluster, but I would check out the connector and sensor first.

ok . will do that. thanks.