DTC P0462: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low 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 |
|---|---|---|---|
| P0462 Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low 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 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 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. Fuel gauge sending unit check:
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. Clear the DTC with the HDS.
5. Wait 5 seconds.
6. 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
Replace the fuel gauge sending unit .
NO
Go to step 3.
- 3. Determine possible failure area (FUEL GAGE+ line, others):
1. 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 Body ground Is there battery voltage?
YES
Go to step 5.
NO
Go to step 4.
- 4. Shorted 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. 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 GAGE+ wire between the gauge control module and the fuel tank unit.
NO
The FUEL GAGE+ wire is OK. Replace the gauge control module .
- 5. Gauge control module check:
1. Turn the vehicle to the OFF (LOCK) mode.
2. Remove the fuel tank unit .
3. Reconnect the following connectors.
Fuel tank unit 4P connector Gauge control module connector A (32P) 4. Turn the vehicle to the ON mode.
5. Clear the DTC with the HDS.
6. Set the float (A) to the E position.
7. Check the fuel gauge.
Does the gauge move to the empty 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 P0462 goes away and the PCM was updated, troubleshooting is complete. If DTC P0462 goes away and the PCM was substituted, replace the original PCM .
NO
