Fisher & Paykel Dishwasher A2 Code: Causes & Fix

What is the Fisher & Paykel Dishwasher A2 error?#

A2 says the temperature probe is handing back a figure the board cannot believe, so it stops trusting the water temperature altogether. Washes run hot then cold, temperature errors crop up, plates come out scalding or barely warmed, and the cycle may bail mid-run. The root is usually a spent probe, a wire gone open or shorted, a green connector, or damp on the sensor body. It threatens nothing, and dressing the connector is very often the opening move.

A2 on a Fisher & Paykel Dishwasher: likely causes and repair cost#

On a Fisher & Paykel Dishwasher, the A2 code signals: thermistor reading out of range.

Typical professional repair: $160–$320 · Difficulty: hard · usually a technician job

Symptoms that often accompany A2: Erratic water temperature; Cycle temperature errors; Dishes too hot or left cold; Cycle aborting mid-wash

Technician diagnostic sequence for A2:

1. Locate the thermistor at the drawer base and measure its resistance
2. Compare the reading against the expected value for the current water temperature
3. A reading that does not track temperature, or an open or shorted result, confirms a failed sensor
4. Inspect the sensor connector for corrosion and reseat it before condemning the part
5. Check the harness run for moisture that could be shorting the signal

Parts a technician may check or replace: temperature sensor

Field note: A2 means the control can no longer trust the temperature reading. A thermistor whose resistance does not move with temperature, or that reads open or shorted, is the failure — reseat the connector first to rule out a bad contact.

How to troubleshoot the A2 error yourself#

Owner reach is limited, but the first move is easy to grasp. A technician finds the probe at the tub base, reads its resistance, and holds that against the figure expected for the water's real warmth; a reading that will not track temperature, or one open or shorted, condemns it. Before writing off the part, though, the plug is checked for corrosion and reseated, because a poor contact on its own can throw this — the reseat is the cheap opening gambit. A look along the loom for moisture that could be bridging the signal rounds it off. That is meter work over the base, so if the temperatures stay wild after any reachable plug is reseated, arrange service.

Is the Fisher & Paykel Dishwasher A2 error worth fixing?#

A2 is worth mending. Budget $160 to $320 for the probe and now and then its wiring, and you buy back dependable temperature control on a four-figure built-in worth keeping. What holds the cost down is the reseat-first habit: a corroded plug can sometimes be redressed for nothing, so the contact is proven before the sensor is renewed. On a machine sound in other respects, righting a probe fault comes in far under replacement.

Fisher & Paykel Dishwasher A2: frequently asked questions#

What does the A2 error mean on a Fisher & Paykel Dishwasher?#

The probe is handing back a figure outside the believable band. A spent sensor, a wire open or shorted, or a corroded plug is behind it, so the machine can no longer trust the water temperature and washes erratically.

Is it safe to keep using a Fisher & Paykel Dishwasher that shows the A2 error?#

Nothing is at risk, but temperatures wander and the cycle may bail, so results are unreliable. It runs, yet it is not worth using until the probe is sorted, since it cannot hold a temperature.

Can I clear the A2 error myself, or do I need a technician?#

Redressing a reachable plug is sometimes an owner step, but metering the probe and tracing the loom is trade work. If the fault outlives a reseat, call service to test and renew the sensor.

How much does it cost to repair the A2 error on a Fisher & Paykel Dishwasher?#

A probe fix runs about $160 to $320 for the sensor and sometimes its wiring. The plug gets reseated first, since a poor contact alone can throw this before the probe itself is renewed.

Which parts usually fail when a dishwasher throws the A2 code?#

The probe leads, alongside open or shorted wiring, a green plug, or damp on its body. The connector is tried first, because a bad contact can pass for a dead sensor.

Is a Fisher & Paykel Dishwasher with the A2 error worth repairing?#

Yes. At $160 to $320 you buy back reliable temperature control on a four-figure built-in worth keeping. Since a reseated plug now and then clears it for nothing, the contact is checked ahead of the part.

Why does failed thermistor (temperature sensor) trigger the A2 error?#

A spent probe stops changing resistance with warmth, so its number drifts outside the expected band. Unable to trust it, the board flags A2 rather than washing on a figure it cannot rely on.