DTC Troubleshooting: P0462
DTC P0462: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
Confirmed DTC
Pending DTC
P0462 Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage
    

1.
Problem verification:

Problem verification
?1.
Turn the vehicle to 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
P0462 Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage
    

Is DTC P0462 indicated?

     
YES
     
     
     
The 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 tank 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.
Shorted wire check (FUEL GAUGE+ line):

Shorted wire check (FUEL GAUGE+ line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Remove the gauge control module.

?3.
Disconnect the following connectors.
Fuel tank unit 4P connector
Gauge control module connector A (32P)

?4.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Fuel tank unit 4P connector: disconnected
Gauge control module connector A (32P): disconnected
Test point 1
Fuel tank unit 4P connector No. 2
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
Repair a short in the FUEL GAUGE+ wire between the gauge control module and the fuel tank unit.?
     
NO
     
     
     
Go to step 3.
3.
Fuel gauge sending unit check:

Fuel gauge sending unit check
?1.
Test the fuel gauge sending unit.

Is the fuel gauge sending unit OK?

     
YES
     
     
     
     
NO