DTC Troubleshooting: P0462

ElectronicCircuitSchematics-buttonADInfo-buttonDTC Advanced Diagnostics: P0462 - Refer to: DTC Advanced Diagnostics: P0462 (2019) or DTC Advanced Diagnostics: P0462 (2020 2021)DTC P0462  : Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode.

   -4. Turn the vehicle to the ON mode.

   -5. Wait 5 seconds.

   -6. 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 - Refer to: How to Troubleshoot the Fuel and Emissions Systems or How to Troubleshoot the Brake Booster Pressure Monitoring System .

2. Shorted 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 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 (female terminals) No. 2:
   Test point 2	Body ground

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

   Is there continuity?

   YES 

   Repair a short in the FUEL+ wire between the gauge control module and the fuel tank unit.

   NO 

   Go to step 3.

3. Fuel gauge sending unit check

   -1. 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 .