A bad ground at the fuel pump/sender connector can disrupt the signal.

The fuel gauge acting erratically or showing "low fuel" despite having a full tank.

The "Check Engine" or "Electronic Fault" light may illuminate on the dashboard.

Depending on which module is reporting the error, DF455 generally points to one of two primary issues:

On vehicles converted to run on gas (LPG), this error is common as the ECU detects fuel level drops that don't match the injection timing.