P0463 Fuel Level Sensor 1 High

I just installed an AirDog. Since the AD is pushing more fuel through the system than the stock lift pump, did this trigger the code?
If not, any suggestions on what else would cause a P0463?

After we figure out what caused the P0463, then we can figure out how to fix it.

 

FUEL LEVEL SENSOR
(G8) SIGNAL CIRCUIT SHORTED TO GROUND
INTERMITTENT CONDITION
ECM
TEST ACTION APPLICABILITY
1 Disconnect the ECM harness connectors.
Disconnect the Fuel level sensor harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Fuel level sensor across the (G8) signal circuit and
return (K4) circuit.
Is the resistance less than 10 ohms?
All
Yes ! Go To 2
No ! Replace the Fuel level sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
2 Measure the resistance between the (G8) signal circuit in the sensor harness
connector and battery negative.
Is the resistance less than 10 Ohms?
All
Yes ! Repair the (G8) signal circuit shorted to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
No ! Go To 3
3 Reconnect the ECM harness connector.
While monitoring with the DRBIIIt, disconnect the Fuel level sensor harness
connector.
Did the DTC P0462 set?
All
Yes ! Test Complete.
No ! Replace the ECM.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
134
DRIVEABILITY - DIESEL

 

Thanks. I'll have to go through the list of things and try them. But first, I will clear the code and see if it re-appears.

 

Do you by chance have the diagram for reference?