ASKO Washer Error Code Pressure sensor fault

This fault means the washer detected an unexpected drop in pressure during the first rinse cycle on W640, W650, or W660 models. The pressure sensor monitors water level inside the drum using a connected hose, and a pressure drop in that system causes the machine to stop the program. The fault typically points to a leak in the pressure sensor hose or in the sensor itself.

The washer interrupts the program when this fault occurs, so it will not continue the cycle on its own. Attempting to restart and run the machine without addressing the fault is not recommended, as a leaking pressure hose or sensor could eventually allow water to reach electrical components or cause the machine to overfill. It is best to diagnose and correct the fault before running another load.

If the fix is simply reseating a disconnected hose, the cost is minimal, covering only your time or a basic service call fee in the range of $75 to $150. Replacing the pressure sensor hose typically adds a small parts cost, while replacing the pressure sensor itself can bring total repair costs into the $150 to $350 range depending on labor rates and part pricing in your area.

Checking and reseating the pressure hose is a task many capable DIYers can handle after disconnecting power to the machine. If the hose appears cracked or the sensor itself is faulty, replacing those components requires identifying the correct part for your specific model and basic disassembly of the cabinet. If you are not comfortable working around plumbing connections and electrical components, a qualified technician is the safer choice.

A power reset may allow the machine to restart temporarily, but if the underlying leak in the hose or sensor is still present, the fault will return during the first rinse phase. Clearing the error code without repairing the cause does not resolve the problem. A lasting fix requires inspecting and correcting the physical cause of the pressure drop.