DTC P0463 (2016 2017 2018)

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 Systems .

DTC (PGM-FI)

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
   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 on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot - Refer to: How to Troubleshoot the Fuel and Emissions Systems .

2. Open wire check (FUEL- 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 32P connector

   - 4. Connect terminals A and B with a jumper wire.

   Terminal A	Fuel tank unit 4P connector No. 4
   Terminal B	Body ground

   Courtesy of HONDA, U.S.A., INC.

   - 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 32P connector: disconnected
   Test point 1	Gauge control module 32P connector No. 22 - Refer to: Gauge Control Module Connector for Inputs and Outputs (2016 2017 2018) .
   Test point 2	Body ground

   Is there continuity?

   YES 

   Go to step 3.

   NO 

   Repair an open in the FUEL- wire between the gauge control module and the fuel tank unit.

3. Open wire check (FUEL+ 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
   Terminal B	Body ground

   Courtesy of HONDA, U.S.A., INC.

   - 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 32P connector: disconnected
   Test point 1	Gauge control module 32P connector No. 21 - Refer to: Gauge Control Module Connector for Inputs and Outputs (2016 2017 2018) .
   Test point 2	Body ground

   Is there continuity?

   YES 

   Go to step 4.

   NO 

   Repair an open in the FUEL+ wire between the gauge control module and the fuel tank unit.

4. 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 

   Replace the gauge control module .

   NO 

   Replace the fuel gauge sending unit .