mypros+
Error code reference

Fisher & Paykel Washer Error Code 38

Pressure sensor fault

Fisher & Paykel codesFisher & Paykel washer codes

Pressure sensor fault: Motor Controller Module recorded water level of empty while agitating; pressure sensor hose may have been severed or fallen off.

First step from the service manual

Check that the pressure tube is intact and has not been cut.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for 38.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What 38 means on a Fisher & Paykel washer

Error code 38 on a Fisher & Paykel washer indicates a pressure sensor fault detected by the Motor Controller Module. Specifically, the controller recorded a water level reading of empty while the machine was actively agitating. This is a contradiction the controller recognizes as a fault condition: a wash cycle cannot logically run an agitation sequence without water present in the drum. The pressure sensor system works by monitoring air pressure in a sealed tube connected to the tub. As water fills, it compresses air in the tube, and the sensor translates that pressure into a water level reading. When the sensor reports empty during agitation, the controller flags the discrepancy.

The most direct and common cause of this fault is a problem with the pressure sensor hose itself. If this hose is severed, kinked, or has slipped off its connection point at either the tub fitting or the sensor port, the sealed air column is broken. With no air pressure signal reaching the sensor, the sensor defaults to or reads a zero-level condition, which the controller interprets as an empty tub. The Motor Controller Module then triggers error code 38 to halt operation and alert the user.

Secondary causes can include a blocked or waterlogged pressure hose, a faulty pressure sensor that sends an incorrect signal, or a wiring fault between the sensor and the Motor Controller Module. However, given the specific language of this fault, a physically disconnected or cut hose is the primary suspect and should be inspected first before moving on to sensor or wiring diagnostics.

Source: manufacturer service documentation.

Common causes of 38

  1. 01

    Pressure hose disconnected

    Wiring / connection

    The pressure sensor hose has slipped off its fitting at the tub or at the sensor port, breaking the sealed air column the sensor needs to measure water level. Inspect both ends of the hose for loose connections and reseat firmly.

  2. 02

    Pressure hose severed or cracked

    Part replacement

    The hose may have been cut by a sharp edge during installation or a previous repair, or it may have cracked due to age or heat exposure. Run your hand along the full length of the hose and look for any visible splits, holes, or pinch points.

  3. 03

    Pressure hose kinked or blocked

    Wiring / connection

    A sharp bend in the hose or an internal blockage from debris or trapped water can prevent the air pressure signal from reaching the sensor. Straighten the hose routing and blow through it gently to confirm it is clear.

  4. 04

    Faulty pressure sensor

    Part replacement

    If the hose is intact and properly connected, the pressure sensor itself may have failed and is outputting an incorrect empty signal to the Motor Controller Module. A failed sensor will need to be replaced.

  5. 05

    Wiring fault between sensor and Motor Controller Module

    Wiring / connection

    Damaged, corroded, or loose wiring in the circuit between the pressure sensor and the Motor Controller Module can cause the controller to receive no signal or an incorrect signal. Inspect the connector and wiring harness for damage or poor seating.

See the test procedure for each cause

Frequently asked questions about 38

What does 38 mean on a Fisher & Paykel washer?
Error code 38 means the Motor Controller Module detected a water level reading of empty while the machine was in the middle of an agitation cycle. This is a pressure sensor fault, and it most commonly points to the pressure sensor hose being disconnected, cut, or otherwise compromised. The washer stops the cycle to prevent operating without accurate water level data. Checking the pressure hose is the recommended first diagnostic step.
Can I fix a Fisher & Paykel error code 38 myself?
In many cases, yes. The most common cause is a pressure sensor hose that has simply come loose from its fitting, which requires no tools or parts to fix. Locate the hose running from the tub to the pressure sensor, check both ends, and press any loose connections firmly back into place. If the hose is cracked or severed, replacing it is a straightforward repair that most DIYers can handle with basic tools and a replacement hose.
Is it safe to keep using my washer when error code 38 appears?
No, you should not continue running the washer while error code 38 is active. The machine has no reliable way to measure the water level inside the tub, which means it could potentially overfill or run a cycle under incorrect conditions. The washer's control system has halted the cycle for this reason, and the fault should be diagnosed and resolved before resuming normal use.
How much does it cost to repair a Fisher & Paykel washer showing error code 38?
If the repair is simply reattaching a disconnected pressure hose, there is no parts cost involved and minimal labor if you do it yourself. A replacement pressure hose, if the existing one is damaged, typically costs in the range of $10 to $40 depending on the part. If the pressure sensor itself has failed, sensor replacement parts generally range from $30 to $80. Professional labor for any of these repairs typically adds $80 to $150 or more depending on your location and the service provider.
Will resetting my Fisher & Paykel washer clear error code 38?
A reset may temporarily clear the error code, but it will return as soon as the washer runs another agitation cycle if the underlying problem has not been fixed. The Motor Controller Module will detect the same contradiction between agitation activity and an empty water level reading and trigger the fault again. The root cause, most likely the pressure hose, must be inspected and corrected for the code to stay cleared.

Related Fisher & Paykel washer codes

All Fisher & Paykel washer codes
View all 175 Fisher & Paykel washer codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass