Drive with caution — fix soon.
This code means the computer is reading an abnormally high voltage from the fuel temperature sensor 'A' circuit, which can make it think the fuel is colder than it really is. The most common causes are an open circuit, a broken wire, a bad connector, or a failed sensor. Typical fixes include repairing the wiring or connector, or replacing the fuel temperature sensor.
$110 – $350
Varies by vehicle and root cause.
Usually yes, since this code rarely causes serious problems. The engine often runs normally, but because the sensor reading is inaccurate, it's smart to have it checked within a week or two.
Repairs generally cost between $110 and $350. Reconnecting or repairing wiring is cheaper, while replacing the fuel temperature sensor adds parts and labor based on your vehicle.
It's a moderate-severity code. It typically won't leave you stranded, but an inaccurate fuel temperature reading can affect efficiency and emissions, so it's worth addressing.
In these sensor circuits, a break or disconnection causes the signal voltage to rise to its maximum, which the computer reads as a high input. That's why P0184 frequently points to a broken wire, loose connector, or failed sensor rather than a short.