DTC P0461: General Description
The fuel level sensor in the fuel tank measures the fuel level of the fuel tank. The powertrain control module (PCM) checks the change in the fuel level sensor output and then compares it to the calculated fuel level value. If the absolute difference between the fuel level sensor output change and the fuel consumption is a specified value for a specified duration when a certain fuel amount is consumed, the PCM detects a malfunction and stores a DTC.
Repeatedly filling the tank with less than the specified amount may lead to a mismatch in the actual fuel amount versus the calculated amount.