DTC P0463: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage
NOTE: Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions SystemsHow to Troubleshoot the CVT System(CVT System) .
| DTC Description | Confirmed DTC | Pending DTC | Freeze Frame |
|---|---|---|---|
| P0463 Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage |
- 1. 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 Freeze Frame P0463 Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage Is DTC P0463 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 freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.
- 2. Determine possible failure area (FUEL GAGE+ line or FUEL GAGE- line, others):
1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect the following connector.
Fuel tank unit 4P connector 3. Turn the vehicle to the ON mode.
4. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode Fuel tank unit 4P connector: disconnected Test point 1 Fuel tank unit 4P connector No. 2 Test point 2 Fuel tank unit 4P connector No. 4 Is there battery voltage?
YES
Go to step 5.
NO
Go to step 3.
- 3. Open wire check (FUEL GAGE- line):
1. Turn the vehicle to the OFF (LOCK) mode.
2. Remove the gauge control module .
3. Disconnect the following connector.
Gauge control module connector A (32P) 4. Connect terminals A and B with a jumper wire.
Terminal A Fuel tank unit 4P connector No. 4 Terminal B Body ground 5. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Fuel tank unit 4P connector: disconnected Fuel tank unit 4P connector No. 4: jumped to body ground Gauge control module connector A (32P): disconnected Test point 1 Gauge control module connector A (32P) No. 21 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. Open wire check (FUEL GAGE+ line):
1. Remove the jumper wire from the fuel gauge sending unit 4P connector.
2. Connect terminals A and B with a jumper wire.
Terminal A Fuel tank unit 4P connector No. 2 Terminal B Body ground 3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Fuel tank unit 4P connector: disconnected Fuel tank unit 4P connector No. 2: jumped to body ground Gauge control module connector A (32P): disconnected Test point 1 Gauge control module connector A (32P) No. 22 Test point 2 Body ground Is there continuity?
YES
Go to step 5.
NO
Repair an open in the FUEL GAGE+ wire between the gauge control module and the fuel tank unit.
- 5. Fuel gauge sending unit performance check:
1. Remove the jumper wire from the fuel tank unit 4P connector.
2. Remove the fuel tank unit .
3. Test the fuel gauge sending unit .
Is the fuel gauge sending unit OK?
YES
Go to step 6.
NO
- 6. Gauge control module check:
1. Reconnect the following connectors.
Fuel tank unit 4P connector Gauge control module connector A (32P) 2. Turn the vehicle to the ON mode.
3. Clear the DTC with the HDS.
4. Set the float (A) to the F position.
5. Check the fuel gauge.
Does the gauge move to the full position?
YES
The gauge control module is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM , then recheck. If DTC P0463 goes away and the PCM was updated, troubleshooting is complete. If DTC P0463 goes away and the PCM was substituted, replace the original PCM .
NO
