DTC P0461: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Range/Performance Problem
General Description
The fuel level sensor is incorporated with the fuel pump and installed in the fuel tank. Using a built-in potentiometer and float, it converts the movement of the float into electrical signals that correspond to the fuel level, and it indicates the amount of fuel in the fuel tank. If the powertrain control module (PCM) receives no change in the fuel level sensor output after driving for a specified number of miles, it detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type, OBD Status
| Execution | Every 124 miles (200 km) |
| Sequence | P0456 is judged as NG |
| Duration | - |
| DTC Type | One drive cycle, MIL off |
| OBD Status | PASSED/FAILED/NOT COMPLETED (STILL TESTING) |
Enable Conditions
| Condition | Minimum | Maximum |
|---|---|---|
| Mileage | 124 miles (200 km) | - |
| No active DTCs set (prevents monitor from running) | P0462, P0463, P0502, P0720, U0029, U0155 | |
| Other | Avoid driving and stopping on a steep road | |
Malfunction Threshold
The change in the fuel level sensor output [FUEL LEVEL] is 3.5 % or less.
[ ]: HDS Parameter
Possible Cause
NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
- Fuel gauge sending unit failure
Confirmation Procedure
Operating Condition
Drive for 124 miles (200 km) or more under Enable Conditions (see "Other") without refueling (turning the vehicle to the OFF (LOCK) mode is acceptable).
- Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.
With the HDS
None.
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected in a certain drive cycle and a malfunction of 0.02 inch leak is detected in the same drive cycle, and DTC P0456 is stored, a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory. The MIL does not come on.
Conditions for clearing the DTC
The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the 12 volt battery.