DTC Troubleshooting: P0463
DTC P0463: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
P0463 Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage
    

1.
Problem verification:

Problem verification
?1.
Press the engine start/stop button to select the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Wait 5 seconds.

?4.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
P0463 Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage
    

Is DTC P0463 indicated?

     
YES
     
     
     
Failure is duplicated. Go to step 2.
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the gauge control module and the fuel gauge sending unit. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot.?
2.
Open wire check (FUEL GAGE- line):

Open wire check (FUEL GAGE- line)
?1.
Press the engine start/stop button to select the OFF mode.

?2.
Remove the gauge control module.

?3.
Disconnect the following connectors.

?4.
Connect terminals A and B with a jumper wire.
Terminal A
Fuel tank unit 4P connector No. 4 (ORN)
Terminal B
Body ground


?5.
Check for continuity between test points 1 and 2.
Test condition
OFF mode
Fuel tank unit 4P connector: disconnected
Gauge control module connector A (32P): disconnected
Fuel tank unit 4P connector No. 4: jumped to body ground
Test circuit
FUEL GAGE-
Test point 1
Gauge control module connector A (32P) No. 21 (ORN)
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
Repair an open in the FUEL GAGE- wire between the gauge control module and the fuel tank unit.?
3.
Open wire check (FUEL GAGE+ line):

Open wire check (FUEL GAGE+ line)
?1.
Remove the jumper wire from the fuel tank unit 4P connector.

?2.
Connect terminals A and B with a jumper wire.
Terminal A
Fuel tank unit 4P connector No. 2 (GRY)
Terminal B
Body ground


?3.
Check for continuity between test points 1 and 2.
Test condition
OFF mode
Fuel tank unit 4P connector: disconnected
Gauge control module connector A (32P): disconnected
Fuel tank unit 4P connector No. 2: jumped to body ground
Test circuit
FUEL GAGE+
Test point 1
Gauge control module connector A (32P) No. 22 (GRY)
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
Go to step 4.
     
NO
     
     
     
Repair an open in the FUEL GAGE+ wire between the gauge control module and the fuel tank unit.?
4.
Fuel gauge sending unit check:

Fuel gauge sending unit check
?1.
Remove the jumper wire from the fuel tank unit 4P connector.

?2.
Test the fuel gauge sending unit.

Is the fuel gauge sending unit OK?

     
YES
     
     
     
     
NO